use HTML::TableExtract;

use feature qw/say/;
use strict;
use warnings;

my $file = 'temp.html';
my @headers1 = qw( Address Register 15 14 13 12 11 10 9 8 7 6 5 );
my @headers2 = qw( Address Register 15 14 13 12 11 10 9 8 7 6   );

sub try_match {
    my ($headers_ref) = @_;

    my $te = new HTML::TableExtract(
        debug   => 5,
        headers => $headers_ref,
        );
    $te->parse_file($file);

    my @tcount1 = $te->counts(0);

    say "headers = @$headers_ref";
    say "tcount1 = @tcount1";

    foreach my $ts ($te->tables) {
        print "Table (", join(',', $ts->coords), "):\n";
        foreach my $row ($ts->rows) {
            print join(',', @$row), "\n";
        }
    }

    say "-" x 79;
}

try_match(\@headers1);
try_match(\@headers2);

##</code><code>##

<table class="gridtable" summary="RegTable">
    <tr>
        <th>Address</th>
        <th>Register</th>
        <th>7</th>
        <th>6</th>
        <th>5</th>
        <th>4</th>
        <th>3</th>
        <th>2</th>
        <th>1</th>
        <th>0</th>
        <th>Reset</th>
        <th>Description</th>
    </tr>
    <tr>
        <td>0x00000001</td>
        <td><a href="#RegisterMap:REG0000">REG0000</a></td>
        <td align=center colspan=6> TEMP </td>
        <td align=center > STOP </td>
        <td align=center > START </td>
        <td>'h14</td>
        <td>TEMPORARY REG.</td>
    </tr>
</table>
 <table class="gridtable" summary="RegTable">
    <tr>
        <th>Address</th>
        <th>Register</th>
        <th>15</th>
        <th>14</th>
        <th>13</th>
        <th>12</th>
        <th>11</th>
        <th>10</th>
        <th>9</th>
        <th>8</th>
        <th>7</th>
        <th>6</th>
        <th>5</th>
        <th>4</th>
        <th>3</th>
        <th>2</th>
        <th>1</th>
        <th>0</th>
        <th>Reset</th>
        <th>Description</th>
    </tr>
    <tr>
        <td>Address</td>
        <td>Register</td>
        <td>15</td>
        <td>14</td>
        <td>13</td>
        <td>12</td>
        <td>11</td>
        <td>10</td>
        <td>9</td>
        <td>8</td>
        <td>7</td>
        <td>6</td>
        <td>5</td>
        <td>4</td>
        <td>3</td>
        <td>2</td>
        <td>1</td>
        <td>0</td>
        <td>Reset</td>
        <td>Description</td>
    </tr>
</table>

##</code><code>##

$ perl 1092870.pl
TE here, headers: Address,Register,15,14,13,12,11,10,9,8,7,6,5
TABLE: cdepth 0, ccount 0, it: 1
Flesh row 0 (11) to 11
111111111111
Flesh row 1 (6) to 11
111000001111
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on Address ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Address)
HPAT: /(?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Address' (Address) in Address (0,0)
attempt match on Register ((?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Register)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Register' (Register) in Register (0,1)
attempt match on 7 ((?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (7)
HPAT: /(?^mi:((9)|(8)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '7' (7) in 7 (0,2)
attempt match on 6 ((?^mi:((9)|(8)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (6)
HPAT: /(?^mi:((9)|(8)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '6' (6) in 6 (0,3)
attempt match on 5 ((?^mi:((9)|(8)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (5)
HPAT: /(?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '5' (5) in 5 (0,4)
attempt match on 4 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 3 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 2 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 1 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 0 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on Reset ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on Description ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
Incomplete header match (left: 10, 11, 12, 13, 14, 15, 8, 9) in row 0, resetting scan
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on 0x00000001 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on REG0000 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  TEMP  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  STOP  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  START  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 'h14 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (14)
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(13)|(12)|(11)|(10)))/
HIT on '14' (14) in 'h14 (1,10)
attempt match on TEMPORARY REG. ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(13)|(12)|(11)|(10)))): 0
Incomplete header match (left: 10, 11, 12, 13, 15, 5, 6, 7, 8, 9, Address, Register) in row 1, resetting scan
LEAVE: cdepth: -1, ccount: 0, it: 0
TABLE: cdepth 0, ccount 1, it: 1
Flesh row 0 (19) to 19
11111111111111111111
Flesh row 1 (19) to 19
11111111111111111111
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on Address ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Address)
HPAT: /(?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Address' (Address) in Address (0,0)
attempt match on Register ((?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Register)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Register' (Register) in Register (0,1)
attempt match on 15 ((?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (15)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '15' (5) in 15 (0,2)
attempt match on 14 ((?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (14)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))/
HIT on '14' (14) in 14 (0,3)
attempt match on 13 ((?^mi:((9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))): (13)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(12)|(11)|(10)))/
HIT on '13' (13) in 13 (0,4)
attempt match on 12 ((?^mi:((9)|(8)|(7)|(6)|(15)|(12)|(11)|(10)))): (12)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(11)|(10)))/
HIT on '12' (12) in 12 (0,5)
attempt match on 11 ((?^mi:((9)|(8)|(7)|(6)|(15)|(11)|(10)))): (11)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(10)))/
HIT on '11' (11) in 11 (0,6)
attempt match on 10 ((?^mi:((9)|(8)|(7)|(6)|(15)|(10)))): (10)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)))/
HIT on '10' (10) in 10 (0,7)
attempt match on 9 ((?^mi:((9)|(8)|(7)|(6)|(15)))): (9)
HPAT: /(?^mi:((8)|(7)|(6)|(15)))/
HIT on '9' (9) in 9 (0,8)
attempt match on 8 ((?^mi:((8)|(7)|(6)|(15)))): (8)
HPAT: /(?^mi:((7)|(6)|(15)))/
HIT on '8' (8) in 8 (0,9)
attempt match on 7 ((?^mi:((7)|(6)|(15)))): (7)
HPAT: /(?^mi:((6)|(15)))/
HIT on '7' (7) in 7 (0,10)
attempt match on 6 ((?^mi:((6)|(15)))): (6)
HPAT: /(?^mi:((15)))/
HIT on '6' (6) in 6 (0,11)
attempt match on 5 ((?^mi:((15)))): 0
attempt match on 4 ((?^mi:((15)))): 0
attempt match on 3 ((?^mi:((15)))): 0
attempt match on 2 ((?^mi:((15)))): 0
attempt match on 1 ((?^mi:((15)))): 0
attempt match on 0 ((?^mi:((15)))): 0
attempt match on Reset ((?^mi:((15)))): 0
attempt match on Description ((?^mi:((15)))): 0
Incomplete header match (left: 15) in row 0, resetting scan
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on Address ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Address)
HPAT: /(?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Address' (Address) in Address (1,0)
attempt match on Register ((?^mi:((Register)|(9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (Register)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Register' (Register) in Register (1,1)
attempt match on 15 ((?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (15)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '15' (5) in 15 (1,2)
attempt match on 14 ((?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (14)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))/
HIT on '14' (14) in 14 (1,3)
attempt match on 13 ((?^mi:((9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))): (13)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(12)|(11)|(10)))/
HIT on '13' (13) in 13 (1,4)
attempt match on 12 ((?^mi:((9)|(8)|(7)|(6)|(15)|(12)|(11)|(10)))): (12)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(11)|(10)))/
HIT on '12' (12) in 12 (1,5)
attempt match on 11 ((?^mi:((9)|(8)|(7)|(6)|(15)|(11)|(10)))): (11)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(10)))/
HIT on '11' (11) in 11 (1,6)
attempt match on 10 ((?^mi:((9)|(8)|(7)|(6)|(15)|(10)))): (10)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)))/
HIT on '10' (10) in 10 (1,7)
attempt match on 9 ((?^mi:((9)|(8)|(7)|(6)|(15)))): (9)
HPAT: /(?^mi:((8)|(7)|(6)|(15)))/
HIT on '9' (9) in 9 (1,8)
attempt match on 8 ((?^mi:((8)|(7)|(6)|(15)))): (8)
HPAT: /(?^mi:((7)|(6)|(15)))/
HIT on '8' (8) in 8 (1,9)
attempt match on 7 ((?^mi:((7)|(6)|(15)))): (7)
HPAT: /(?^mi:((6)|(15)))/
HIT on '7' (7) in 7 (1,10)
attempt match on 6 ((?^mi:((6)|(15)))): (6)
HPAT: /(?^mi:((15)))/
HIT on '6' (6) in 6 (1,11)
attempt match on 5 ((?^mi:((15)))): 0
attempt match on 4 ((?^mi:((15)))): 0
attempt match on 3 ((?^mi:((15)))): 0
attempt match on 2 ((?^mi:((15)))): 0
attempt match on 1 ((?^mi:((15)))): 0
attempt match on 0 ((?^mi:((15)))): 0
attempt match on Reset ((?^mi:((15)))): 0
attempt match on Description ((?^mi:((15)))): 0
Incomplete header match (left: 15) in row 1, resetting scan
LEAVE: cdepth: -1, ccount: 1, it: 0
headers = Address Register 15 14 13 12 11 10 9 8 7 6 5
tcount1 =
-------------------------------------------------------------------------------
TE here, headers: Address,Register,15,14,13,12,11,10,9,8,7,6
TABLE: cdepth 0, ccount 0, it: 1
Flesh row 0 (11) to 11
111111111111
Flesh row 1 (6) to 11
111000001111
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on Address ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (Address)
HPAT: /(?^mi:((Register)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Address' (Address) in Address (0,0)
attempt match on Register ((?^mi:((Register)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (Register)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Register' (Register) in Register (0,1)
attempt match on 7 ((?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (7)
HPAT: /(?^mi:((9)|(8)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '7' (7) in 7 (0,2)
attempt match on 6 ((?^mi:((9)|(8)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (6)
HPAT: /(?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '6' (6) in 6 (0,3)
attempt match on 5 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 4 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 3 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 2 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 1 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 0 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on Reset ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on Description ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
Incomplete header match (left: 10, 11, 12, 13, 14, 15, 8, 9) in row 0, resetting scan
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on 0x00000001 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on REG0000 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  TEMP  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  STOP  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on  START  ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 'h14 ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (14)
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))/
HIT on '14' (14) in 'h14 (1,10)
attempt match on TEMPORARY REG. ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(13)|(12)|(11)|(10)))): 0
Incomplete header match (left: 10, 11, 12, 13, 15, 6, 7, 8, 9, Address, Register) in row 1, resetting scan
LEAVE: cdepth: -1, ccount: 0, it: 0
TABLE: cdepth 0, ccount 1, it: 1
Flesh row 0 (19) to 19
11111111111111111111
Flesh row 1 (19) to 19
11111111111111111111
HPAT: /(?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
attempt match on Address ((?^mi:((Register)|(Address)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (Address)
HPAT: /(?^mi:((Register)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Address' (Address) in Address (0,0)
attempt match on Register ((?^mi:((Register)|(9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (Register)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on 'Register' (Register) in Register (0,1)
attempt match on 15 ((?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (15)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(14)|(13)|(12)|(11)|(10)))/
HIT on '15' (15) in 15 (0,2)
attempt match on 14 ((?^mi:((9)|(8)|(7)|(6)|(14)|(13)|(12)|(11)|(10)))): (14)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(13)|(12)|(11)|(10)))/
HIT on '14' (14) in 14 (0,3)
attempt match on 13 ((?^mi:((9)|(8)|(7)|(6)|(13)|(12)|(11)|(10)))): (13)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(12)|(11)|(10)))/
HIT on '13' (13) in 13 (0,4)
attempt match on 12 ((?^mi:((9)|(8)|(7)|(6)|(12)|(11)|(10)))): (12)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(11)|(10)))/
HIT on '12' (12) in 12 (0,5)
attempt match on 11 ((?^mi:((9)|(8)|(7)|(6)|(11)|(10)))): (11)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(10)))/
HIT on '11' (11) in 11 (0,6)
attempt match on 10 ((?^mi:((9)|(8)|(7)|(6)|(10)))): (10)
HPAT: /(?^mi:((9)|(8)|(7)|(6)))/
HIT on '10' (10) in 10 (0,7)
attempt match on 9 ((?^mi:((9)|(8)|(7)|(6)))): (9)
HPAT: /(?^mi:((8)|(7)|(6)))/
HIT on '9' (9) in 9 (0,8)
attempt match on 8 ((?^mi:((8)|(7)|(6)))): (8)
HPAT: /(?^mi:((7)|(6)))/
HIT on '8' (8) in 8 (0,9)
attempt match on 7 ((?^mi:((7)|(6)))): (7)
HPAT: /(?^mi:((6)))/
HIT on '7' (7) in 7 (0,10)
attempt match on 6 ((?^mi:((6)))): (6)
HPAT: /(?^mi:())/
HIT on '6' (6) in 6 (0,11)
Captured table (0,1)
LEAVE: cdepth: -1, ccount: 1, it: 0
headers = Address Register 15 14 13 12 11 10 9 8 7 6
tcount1 = 1
Table (0,1):
Address,Register,15,14,13,12,11,10,9,8,7,6
-------------------------------------------------------------------------------
$ 

##</code><code>##

attempt match on 15 ((?^mi:((9)|(8)|(7)|(6)|(5)|(15)|(14)|(13)|(12)|(11)|(10)))): (15)
HPAT: /(?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))/
HIT on '15' (5) in 15 (1,2)
attempt match on 14 ((?^mi:((9)|(8)|(7)|(6)|(15)|(14)|(13)|(12)|(11)|(10)))): (14)
[...]
attempt match on 5 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
attempt match on 4 ((?^mi:((9)|(8)|(15)|(14)|(13)|(12)|(11)|(10)))): 0
[...]

##</code><code>##

my @headers1 = (
    "Address",
    "Register",
    qr/^15$/,
    qr/^14$/,
    qr/^13$/,
    qr/^12$/,
    qr/^11$/,
    qr/^10$/,
    qr/^9$/,
    qr/^8$/,
    qr/^7$/,
    qr/^6$/,
    qr/^5$/,
    qr/^4$/,
    qr/^3$/,
    qr/^2$/,
    qr/^1$/,
    qr/^0$/,
);