C11112331312111112111133133313331333133322131131211113313331322232223121   >>    C1111233131211111211113313331333133313332213113121111331333132223222312   <<    C11112331312111112111133133313331333133322131131211113313331322232223123   >>      C11112331312111112111133133313331333133322131131211113313331322232223122   >>