|  | C31231211113313121211113313331333133313311211331333133313131211113313331333133112131131 
  >> |  | C3123121111331312121111331333133313331331121133133313331313121111331333133313311213113 
  << |  | C31231211113313121211113313331333133313311211331333133313131211113313331333133112131133 
  >> |  |