C11112331312111112111133133313331333133112111111331333133313331333133322121231   >>    C1111233131211111211113313331333133313311211111133133313331333133313332212123   <<    C11112331312111112111133133313331333133112111111331333133313331333133322121233   >>      C11112331312111112111133133313331333133112111111331333133313331333133322121232   >>