C11111333133313232233133313331333133313232233312111133132213331313111   >>    C1111133313331323223313331333133313331323223331211113313221333131311   <<    C11111333133313232233133313331333133313232233312111133132213331313113   >>      C11111333133313232233133313331333133313232233312111133132213331313112   >>