#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dumper;
use feature qw/ say /;

my @a;
$a[0][0] = 'foo';
$a[0][1] = 'bar';
$a[1][0] = 'baz';
$a[1][1] = 'quux';

say Dumper @a;

say $a[0];

for ( @a ) {
   say (join ' ', @{ $_ });
}