def fb(n):
  if n % 15 == 0:
    return "FizzBuzz"
  elif n % 3 == 0:
    return "Fizz"
  elif n % 5 == 0:
    return "Buzz"
  else:
    return ""

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