|  | C1111233131211111211113313331333133313232321333133313331333131133133313331333131211111211111131221 
  >> |  | C111123313121111121111331333133313331323232133313331333133313113313331333133313121111121111113122 
  << |  | C1111233131211111211113313331333133313232321333133313331333131133133313331333131211111211111131223 
  >> |  |