C11111333133313232233133313331333133313331312111133133323312131   >>    C1111133313331323223313331333133313331333131211113313332331213   <<    C11111333133313232233133313331333133313331312111133133323312133   >>      C11111333133313232233133313331333133313331312111133133323312132   >>