C11111333133313232233133313331333133313331312111133133112111111211312121   >>    C1111133313331323223313331333133313331333131211113313311211111121131212   <<    C11111333133313232233133313331333133313331312111133133112111111211312123   >>      C11111333133313232233133313331333133313331312111133133112111111211312122   >>