C11112331312111112111133133313331333133313123313331333221211212231   >>    C1111233131211111211113313331333133313331312331333133322121121223   <<    C11112331312111112111133133313331333133313123313331333221211212233   >>      C11112331312111112111133133313331333133313123313331333221211212232   >>