C11112331312111112111133133313331333132323213331333131121333132311311   >>    C1111233131211111211113313331333133313232321333133313112133313231131   <<    C11112331312111112111133133313331333132323213331333131121333132311313   >>      C11112331312111112111133133313331333132323213331333131121333132311312   >>