#  Print out the whole AoA contents
foreach my $arrayref (@strings) {
        print "$_\n" foreach @$arrayref;
}

print "----\n\n";

#  Or just the contents of one group
foreach my $item (@{$strings[0]}) {
        print "$item\n";
}

__DATA__
aaa bbb ccc-ddd eee fff-ggg hhh iii-jjj kkk lll-

__OUTPUT__
aaa
bbb
ccc
ddd
eee
fff
ggg
hhh
iii
jjj
kkk
lll
----

aaa
bbb
ccc