# Author: Scott Wehrwein
# Date: 2/13/23
# Code from L12 Exercise 4

def f(a, b):
  xa, ya = a
  xb, yb = b
  return (ya, xa), (yb, xb)


# f(1, 2)
# f(1, 2, 3, 4)
# f((1, 2), (3, 4))
# f(((1, 1), 2), (3, 4))
# f((1, 1, 2), (3, 4))
