C11112331312111112111133133313331333133313123313331322132223323131   >>    C1111233131211111211113313331333133313331312331333132213222332313   <<    C11112331312111112111133133313331333133313123313331322132223323133   >>      C11112331312111112111133133313331333133313123313331322132223323132   >>