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my @join = (@array1, @array2); print @join;
print qq{$array1[$_] $array2[$_]\n} for (0 .. $#array1);
$ perl -Mstrict -Mwarnings -E ' my @a1 = (q{1 2 3}, q{4 5 6}); ... ' 1 2 3 a b c 4 5 6 d e f