C11112331312111112111133133313331333133313112113313331333133313331322333233121   >>    C1111233131211111211113313331333133313331311211331333133313331333132233323312   <<    C11112331312111112111133133313331333133313112113313331333133313331322333233123   >>      C11112331312111112111133133313331333133313112113313331333133313331322333233122   >>