def fb(n):
    if(n%3==0 and n%5==0):
        return "FizzBuzz"
    if (n%3==0):
        return "Fizz"
    if (n%5==0):
        return "Buzz"
    return ""

i = 1
while i <= 20:
    print(i, fb(i))
    i = i + 1