input: Write a python function to create a list of pairs from two lists.
  assert create_pairs([1,2,3], ['a', 'b', 'c']) == [(1, 'a'), (1, 'b'), (1, 'c'), (2, 'a'), (2, 'b'), (2, 'c'), (3, 'a'), (3, 'b'), (3, 'c')]
  assert create_pairs([1, 2], ['x', 'y', 'z']) == [(1, 'x'), (1, 'y'), (1, 'z'), (2, 'x'), (2, 'y'), (2, 'z')]
  assert create_pairs([4, 5], ['p', 'q']) == [(4, 'p'), (4, 'q'), (5, 'p'), (5, 'q')]
output: def create_pairs(list1, list2):
      return [(x, y) for x in list1 for y in list2]