C11112331312111112111133133313331333132323213331333133312111133133313123132321   >>    C1111233131211111211113313331333133313232321333133313331211113313331312313232   <<    C11112331312111112111133133313331333132323213331333133312111133133313123132323   >>      C11112331312111112111133133313331333132323213331333133312111133133313123132322   >>