|  | C131121333133313233213331333133313331333133313331333133313113313331333133313121133121 
  >> |  | C13112133313331323321333133313331333133313331333133313331311331333133313331312113312 
  << |  | C131121333133313233213331333133313331333133313331333133313113313331333133313121133123 
  >> |  |