C11111333133313232233133313331333133112111112133313112113313123121131   >>    C1111133313331323223313331333133313311211111213331311211331312312113   <<    C11111333133313232233133313331333133112111112133313112113313123121133   >>      C11111333133313232233133313331333133112111112133313112113313123121132   >>