C111123313121111121111331333133313331333133313331333133313331311112122311   >>    C11112331312111112111133133313331333133313331333133313331333131111212231   <<    C111123313121111121111331333133313331333133313331333133313331311112122313   >>      C111123313121111121111331333133313331333133313331333133313331311112122312   >>