No ++ from me because you work with "rand". That's not permutating but "throwing dice" and hoping to get all permutations.

-- for doing someone's homework ;-)
$\=~s;s*.*;q^|D9JYJ^^qq^\//\\\///^;ex;print

In reply to Re^2: generate combinations of lists by Skeeve
in thread generate combinations of lists by gpm1982

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