def test1(self):
A = [1, 2, 3]
res = perm(A)
print res
def test2(self):
A = [1, 1, 2]
res = perm(A)
print res
def test1(self):
A = [1, 2, 3]
res = perm(A)
print res
def test2(self):
A = [1, 1, 2]
res = perm(A)
print res