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

my %hash;
<DATA>; # Skip the header.
while (<DATA>) {
    my ($name, $number, $color) = split;
    $hash{$name}{$number}{$color}++;
}

my %returnedHash = %{ $hash{GNAEUS} };

for my $number (keys %returnedHash) {
    for my $color (keys %{ $returnedHash{$number} }) {
        print "$number $color $returnedHash{$number}{$color}\n";
    }
}
__DATA__
NAME NUMBER COLOR
GNAEUS 1 BLUE
GNAEUS 1 RED
GNAEUS 3 MAGENTA
GNAEUS 3 GREEN
GNAEUS 3 GREEN
FABIUS 1 BLUE
FABIUS 2 YELLOW
FABIUS 1 RED