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

my @array1 = ( 1 .. 6 );
my @array2 = ( 7 .. 9 );
my @array3 = ( 'aa' .. 'af' );
my @array4 = ( 'b0' .. 'b9' );

my %hash = (
    key1 => [\@array1, \@array2],
    key2 => [\@array3, \@array4],
);

print "hoffentlich eine acht: ", $hash{key1}->[1]->[1], "\n";