|  | C1111233131211111211113313331333133313232321333133313331333131133133313331333131211111133121121 
  >> |  | C111123313121111121111331333133313331323232133313331333133313113313331333133313121111113312112 
  << |  | C1111233131211111211113313331333133313232321333133313331333131133133313331333131211111133121123 
  >> |  |