C1111133313331323223313331333133313331323131211113313232222233211111   >>    C111113331333132322331333133313331333132313121111331323222223321111   <<    C1111133313331323223313331333133313331323131211113313232222233211113   >>      C1111133313331323223313331333133313331323131211113313232222233211112   >>