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#!/usr/bin/env python3
from itertools import permutations
with open("PERMUTE.INP") as f:
l = sorted(set(permutations(f.readline().strip())))
with open("PERMUTE.OUT", "w") as f:
f.write("{}\n".format(len(l)))
for i in l:
f.write("".join(i) + '\n')
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