|  | C31231211111133131211113313331333132333133313121111331311331333133313331333132313231323131211 
  >> |  | C3123121111113313121111331333133313233313331312111133131133133313331333133313231323132313121 
  << |  | C31231211111133131211113313331333132333133313121111331311331333133313331333132313231323131213 
  >> |  |