C11112331312111112111133133313331333132323213331333131121333112211231323321   >>    C1111233131211111211113313331333133313232321333133313112133311221123132332   <<    C11112331312111112111133133313331333132323213331333131121333112211231323323   >>      C11112331312111112111133133313331333132323213331333131121333112211231323322   >>