number1 = int(input())
number2 = int(input())

num1 = str(number1)
num2 = str(number2)

for i in range(int(num1[0]), int(num2[0]) + 1):
    for j in range(int(num1[1]), int(num2[1]) + 1):
        for k in range(int(num1[2]), int(num2[2]) + 1):
            for x in range(int(num1[3]), int(num2[3]) + 1):
                if i % 2 == 0 and j % 2 == 0 and k % 2 == 0 and x % 2 == 0:
                    print(f"{1}{j}{k}{x}", end=" ")