list1 = [] list2 = []

x = [int(input()), int(input())]

for i in x: list1.append(i) list2.append(i) print(list1) print(list2)

list1.pop() list2.pop(0) print(list1) print(list2)

y = [int(input()), int(input()), int(input())]

for j in y: list1.append(j) list2.append(j) print(list1) print(list2)

z = [] for m in range(0, 4): z.append(list1.pop())

for n in z: print(n, end=' ')