import itertools

arr =  [(1,2),(2,3),(5,2),(6,3)]
k = itertools.permutations(arr)
for el in k:
  print(el)

((1, 2), (2, 3), (5, 2), (6, 3))
((1, 2), (2, 3), (6, 3), (5, 2))
((1, 2), (5, 2), (2, 3), (6, 3))
((1, 2), (5, 2), (6, 3), (2, 3))
((1, 2), (6, 3), (2, 3), (5, 2))
((1, 2), (6, 3), (5, 2), (2, 3))
((2, 3), (1, 2), (5, 2), (6, 3))
((2, 3), (1, 2), (6, 3), (5, 2))
((2, 3), (5, 2), (1, 2), (6, 3))
((2, 3), (5, 2), (6, 3), (1, 2))
((2, 3), (6, 3), (1, 2), (5, 2))
((2, 3), (6, 3), (5, 2), (1, 2))
((5, 2), (1, 2), (2, 3), (6, 3))
((5, 2), (1, 2), (6, 3), (2, 3))
((5, 2), (2, 3), (1, 2), (6, 3))
((5, 2), (2, 3), (6, 3), (1, 2))
((5, 2), (6, 3), (1, 2), (2, 3))
((5, 2), (6, 3), (2, 3), (1, 2))
((6, 3), (1, 2), (2, 3), (5, 2))
((6, 3), (1, 2), (5, 2), (2, 3))
((6, 3), (2, 3), (1, 2), (5, 2))
((6, 3), (2, 3), (5, 2), (1, 2))
((6, 3), (5, 2), (1, 2), (2, 3))
((6, 3), (5, 2), (2, 3), (1, 2))