C11112331312111112111133133313331333133313331333133313311211111323221231   >>    C1111233131211111211113313331333133313331333133313331331121111132322123   <<    C11112331312111112111133133313331333133313331333133313311211111323221233   >>      C11112331312111112111133133313331333133313331333133313311211111323221232   >>