C11111333133313232233133313331333133313232233312111133132321111   >>    C1111133313331323223313331333133313331323223331211113313232111   <<    C11111333133313232233133313331333133313232233312111133132321113   >>      C11111333133313232233133313331333133313232233312111133132321112   >>