Not sure if this is of any help but I offer it anyway !. Basic idea is to build patterns of characters/numbers and count them to show the most common. I've applied it to all your data but you would probably want to do each column separately

#!perl
use strict;
my %pattern = ();
my @data = <DATA>;

# indentify patterns
for (@data){
  chomp;
  tr/A-Za-z/A/;
  tr/0-9/9/;
  $_ =~ s/A+/[A-Za-z]+/g;
  $_ =~ s/9+/[0-9]+/g;
  ++$pattern{$_}; # count duplicates
}

# results
for (sort keys %pattern){
  print "$pattern{$_}   $_\n";
}

# build regex
my $re = join '|',map { quotemeta } sort keys %pattern;

# check data against regex
for (@data){
  unless (/^($re)$/){
    print "No match $_\n";
  }
}

__DATA__
John DoE
ABC123
1-233-123-4562
Jo M. Doeson
abd123
(222)222-2222
Mc'Doe, Jim
abd123
222-222-2222
MCDOE, JAN E.
abd1243
(222)222-2ab2

[download]
poj

In reply to Re^3: Generate a regex from text by poj
in thread Generate a regex from text by porg

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