#! /usr/local/bin/perl -w

use strict;

while( <DATA> ) {
    chomp;
    my $ok = (
            length $_ >= 5
        and length $_ <=8
        and /\d/
        and /[A-Z]/
        and /[a-z]/
    );
    print sprintf('%-12s', $_), ($ok ? 'valid' : 'invalid '), "\n";
}