|  | C131121333133313233213331333133313331333133313331333133313331333131211111211111333132312121 
  >> |  | C13112133313331323321333133313331333133313331333133313331333133313121111121111133313231212 
  << |  | C131121333133313233213331333133313331333133313331333133313331333131211111211111333132312123 
  >> |  |