|  | C31231211113313121211113313331323133313331333133313121111113313331331121111333131121 
  >> |  | C3123121111331312121111331333132313331333133313331312111111331333133112111133313112 
  << |  | C31231211113313121211113313331323133313331333133313121111113313331331121111333131123 
  >> |  |