C3123121111121111131213331333133313331333133313332112323133313232233131121   >>    C312312111112111113121333133313331333133313331333211232313331323223313112   <<    C3123121111121111131213331333133313331333133313332112323133313232233131123   >>      C3123121111121111131213331333133313331333133313332112323133313232233131122   >>