C111123313121111121111331333133313331333133313331333133313331333233313223111   >>    C11112331312111112111133133313331333133313331333133313331333133323331322311   <<    C111123313121111121111331333133313331333133313331333133313331333233313223113   >>      C111123313121111121111331333133313331333133313331333133313331333233313223112   >>