C11111333133313232233133313331333133313332321112111133132311111   >>    C1111133313331323223313331333133313331333232111211113313231111   <<    C11111333133313232233133313331333133313332321112111133132311113   >>      C11111333133313232233133313331333133313332321112111133132311112   >>