use strict;
use warnings;
use Set::IntSpan;

my $TM_part1 = "25-40,74-93,95-120,130-149";
my $TM_part2 = "31-47,84-99,107-123,137-151";
my @split_TM1 = split(",", $TM_part1);
my @split_TM2 = split(",", $TM_part2);

for my $i (0 .. $#split_TM1) {
    my $set1 = Set::IntSpan->new($split_TM1[$i]);
    my $set2 = Set::IntSpan->new($split_TM2[$i]);
    my $u_set = intersect $set1 $set2;

    print "Union of strings: $u_set\n";
}