C11111333133313232233133313331333133313331312111112133313113231   >>    C1111133313331323223313331333133313331333131211111213331311323   <<    C11111333133313232233133313331333133313331312111112133313113233   >>      C11111333133313232233133313331333133313331312111112133313113232   >>