I was just trying to "hard code" this C->consonant and V->vowel for "just" English (probably one of the most difficult languages) and I wound up in trouble. For example in English sometimes Y is a vowel and sometimes a consonant (or so I think...grammar was never my strong suit).
oxforddictionaries.com/words/is-the-letter-y-a-vowel-or-a-consonant

I think that the "rules" are more complex than you have specified.
This code is simple, but I think it illustrates this "y" difficulty.

#!/usr/bin/perl -w
use strict;

my @array = ("BOB", "Sheila", "Very", "by", "berry", "beyond");
            
foreach my $word (@array)
{
    my $original = $word;
    $word = uc $word;
    $word =~ s/V/C/g;
    $word =~ s/[AEIOUY]/V/g;
    $word =~ s/[^V]/C/g;
    printf "%-10s %s\n", $original, $word;
}
__END__
BOB        CVC
Sheila     CCVVCV
Very       CVCV
by         CV
berry      CVCCV
beyond     CVVVCC #No!!!
[download]

I guess at the end of the day, I don't understand the complete problem.
But if am to match some input words against some CVC pattern, I need to be able to translate the words into that pattern and I don't know how to do that according to the grammar rules that have been specified.