C11112331312111112111133133313331333133313331333133313331333133313332221121   >>    C1111233131211111211113313331333133313331333133313331333133313331333222112   <<    C11112331312111112111133133313331333133313331333133313331333133313332221123   >>      C11112331312111112111133133313331333133313331333133313331333133313332221122   >>