With a sufficiently recent version of Perl, you can do: 
use Modern::Perl;

my @ref = qw/aap noot mies wim zus jet teun vuur gijs lam kees bok/;
while (my $in = <DATA>){
    chomp $in;
    while (my ($index, $value) = each @ref) {
        if ($value=~ m/$in/){
            say "$in : $value : $ref[$index + 2]";
        }
    }
}

__DATA__
a
e
i
o
u
aa
ee
ie
oo
uu

[download]
output: 
a : aap : mies
a : lam : bok
e : mies : zus
e : jet : vuur
e : teun : gijs
e : kees : 
i : mies : zus
i : wim : jet
i : gijs : kees
o : noot : wim
o : bok : 
u : zus : teun
u : teun : gijs
u : vuur : lam
aa : aap : mies
ee : kees : 
ie : mies : zus
oo : noot : wim
uu : vuur : lam

[download]
Of course you get a number of Use of uninitialized value in concatenation (.) or string at ... warnings because you access unitialized elements of the array.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In reply to Re: Getting values for next array iteration when matching current by CountZero
in thread Getting values for next array iteration when matching current by naturalsciences

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