PIN code

num1 = int(input())
num2 = int(input())
num3 = int(input())
pin1 = []
pin2 = []
pin3 = []
for a in range(1, num1 + 1):
    if a % 2 == 0:
        pin1.append(a)
for b in range(1, num2 + 1):
    if b in [2, 3, 5, 7]:
        pin2.append(b)
for c in range(1, num3 + 1):
    if c % 2 == 0:
        pin3.append(c)

for i in pin1:
    for j in pin2:
        for h in pin3:
            print(i, j, h)