C111123313121111121111331333133313331333133313331333133313331311211213111   >>    C11112331312111112111133133313331333133313331333133313331333131121121311   <<    C111123313121111121111331333133313331333133313331333133313331311211213113   >>      C111123313121111121111331333133313331333133313331333133313331311211213112   >>