C111123313121111121111331333133313331333133313331333133313331311211233311   >>    C11112331312111112111133133313331333133313331333133313331333131121123331   <<    C111123313121111121111331333133313331333133313331333133313331311211233313   >>      C111123313121111121111331333133313331333133313331333133313331311211233312   >>