Permutations of a Set with Repetitions (Algorithm 242 [G6]) CACM October, 1964 Sag, T. W. CA641006 JB March 9, 1978 4:49 PM 996 5 996 996 5 996 996 5 996 2044 5 996 996 6 996 1558 6 996 2230 6 996 521 6 996