string = input()
sub_str = input()

result = []
res01 = string.find(sub_str)
if res01 != -1:
    result.append(str(res01))

if result:
    start = res01
    temp = 0
    while True:
        start = start + 1
        res02 = string.find(sub_str, start)
        if res02 != -1:
            temp = res02

        if res02 == -1:
            if temp != 0:
                result.append(str(temp))
            break

if result:
    print(" ".join(result))
else:
    print("None"