a = int(input())
b = int(input())
answer = []
for i in range(a // 100, b // 100 + 1):
    f = i % 10
    s = i // 10
    first = 100 * i + f * 10 + f
    second = 100 * i + s * 10 + s
    if f == s:
        for j in range(10):
            third = 100 * i + f * 10 + j
            chetire = 100 * i + j * 10 + f
            if a < third < b:
                answer.append(third)
            if a < chetire < b:
                answer.append(chetire)
    else:
        if a < first < b:
            answer.append(first)
        if a < second < b:
            answer.append(second)
answer.sort()
for i in range(len(answer)):
    print(answer[i])