C11111333133313232233133313331333133112111112113313231333133311211312131   >>    C1111133313331323223313331333133313311211111211331323133313331121131213   <<    C11111333133313232233133313331333133112111112113313231333133311211312133   >>      C11111333133313232233133313331333133112111112113313231333133311211312132   >>