from itertools import *
def f(x, y, z, w):
    return (x == (not(z))) <= ((x or w) == y)
for a1, a2, a3, a4, a5 in product([0, 1], repeat = 5):
    table = [(0, a1, 0, a2), (a3, a4, 0, 0), (a5, 0, 0, 0)]
    if len(table) == len(set(table)):
        for p in permutations('wxyz'):
            if [f(**dict(zip(p, r))) for r in table] == [0, 0, 0]:
                print(p)