I am not sure what you want.
It would be helpful if you could give an OUTPUT section like you have a DATA section.
Why does this have to be so complex?
Update: small formatting change.

#!/usr/bin/perl -w
use strict;

while (<DATA>)
{
   print "testing: $_";
   chomp;
   my @digits = m/\d+/g;
   print "digits only: @digits\n";
   my @numletters = m/\d[^\d]+/g;
   print "digits_and_letters:@numletters\n\n";
}
#Prints:
#testing: 1c
#digits only: 1
#digits_and_letters:1c
#
#testing: 2w
#digits only: 2
#digits_and_letters:2w
#
#testing: 2c3w
#digits only: 2 3
#digits_and_letters:2c 3w
#
#testing: 1w1w
#digits only: 1 1
#digits_and_letters:1w 1w
#
#testing: 1w2r
#digits only: 1 2
#digits_and_letters:1w 2r
#
#testing: 2r1c
#digits only: 2 1
#digits_and_letters:2r 1c

__DATA__
1c
2w
2c3w
1w1w
1w2r
2r1c
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