# quadruple.py
# Fig. 17.12 
# input: 5 20000

import math
from prime import *

a, b = map(int, input("a b=? ").split())
p = 6*math.trunc(a/6) + 5
# p = 30*math.trunc((a+18)/30)+11

while p <= b:
# while p <= b-8:
  if isPrime(p) and isPrime(p+2) and \
     isPrime(p+6) and isPrime(p+8):
    print(f"{p:5} {p+2:5} {p+6:5} {p+8:5}")
  p += 6
  # p += 30