C11112331312111112111133133313331333133313123313331321123232223312111   >>    C1111233131211111211113313331333133313331312331333132112323222331211   <<    C11112331312111112111133133313331333133313123313331321123232223312113   >>      C11112331312111112111133133313331333133313123313331321123232223312112   >>