#!/usr/bin/perl
use strict;
use warnings;

my @filename = qw{filename1 filename2 filename3};
my @data =qw{DATA1 DATA2};

foreach my $file (@filename) {
    foreach my $searchdata (@data) {
        my $cmd_results = `grep -c $searchdata $file`;
        print "$file | $searchdata | $cmd_results \n"; # or whatever tags refers to...
    }
}