C11112331312111112111133133313331333133313123313331323221232231   >>    C1111233131211111211113313331333133313331312331333132322123223   <<    C11112331312111112111133133313331333133313123313331323221232233   >>      C11112331312111112111133133313331333133313123313331323221232232   >>