|  | C131121333133313233213331333133313331333133313331333133313331333133313223313331311212131 
  >> |  | C13112133313331323321333133313331333133313331333133313331333133313331322331333131121213 
  << |  | C131121333133313233213331333133313331333133313331333133313331333133313223313331311212133 
  >> |  |