C11112331312111112111133133313331333133313123313331333233313221323321   >>    C1111233131211111211113313331333133313331312331333133323331322132332   <<    C11112331312111112111133133313331333133313123313331333233313221323323   >>      C11112331312111112111133133313331333133313123313331333233313221323322   >>