new_contents: import utils
  import itertools
  
  primes = set(filter(lambda n: n >= 1000, utils.primes(9999)))
  
  def same_digits(x, y):
      return set(str(x)) == set(str(y))
  
  for p in primes:
      for i in range(1, (10000 - p) / 2):
          pi = p + i
          pii = pi + i
          if pi in primes and pii in primes and same_digits(p, pi) and same_digits(p, pii):
              print str(p) + str(p + i) + str(p + i + i)
  
subject: add 49