C11112331312111112111133133313331333132323213331333131333131312311   >>    C1111233131211111211113313331333133313232321333133313133313131231   <<    C11112331312111112111133133313331333132323213331333131333131312313   >>      C11112331312111112111133133313331333132323213331333131333131312312   >>