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# an array of terms used to create hash1
...
$occurs{113} = [ 'male', 'child' ];
$occurs{114} = [ 'female' ];
$occurs{115} = [ 'child', 'female' ];

my %tally = ();
# Male on its own appeared twice
...
# Child on its own appeared twice
$tally{hash1_terms3} = 0;
# and so on...