C11112331312111112111133133313331333133313112113313331333133313331331121211121   >>    C1111233131211111211113313331333133313331311211331333133313331333133112121112   <<    C11112331312111112111133133313331333133313112113313331333133313331331121211123   >>      C11112331312111112111133133313331333133313112113313331333133313331331121211122   >>