Re^3: Perl script to match a regexp in the prior line and other multiple lines

#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11110110
use warnings;

$_ = do { local $/; <DATA> };

print " pattern offset pin_num\n";
while( /\^/g )
  {
  my $pre = $`;
  my ($pattern, $offset) = $pre =~ /^(\S+) +(\S+).*\n(.*)\z/m;
  my $skip = length $3;
  printf "%6s%7s%5s%s%s%9s\n", $pattern, $offset,
    ($pre =~ /^.{$skip}(\w)/gm)[ 0..2, -1]
  }

__DATA__

                                        p p p p p
Pin Numbers                             3 2 1 8 9
                                        1 2 3 4 5

pattern     offset
scan1        2965                       H L H L H
                                            ^
scan2        2200                       L H H L H
                                          ^
scan3        1100                       H L L L L
                                          ^
scan4        1500                       L L H H H
                                            ^
scan5        2800                       H H L H H
                                          ^     ^
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