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from itertools import combinations_with_replacement
s, k = input().split()
l = list(combinations_with_replacement(sorted(s),int(k)))
for item in l:
print(''.join(item))
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itertools.combinations_with_replacement()
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from itertools import combinations_with_replacement s, k = input().split() l = list(combinations_with_replacement(sorted(s),int(k))) for item in l: print(''.join(item))