C111123313121111121111331333133313331323231333133313332213232212311   >>    C11112331312111112111133133313331333132323133313331333221323221231   <<    C111123313121111121111331333133313331323231333133313332213232212313   >>      C111123313121111121111331333133313331323231333133313332213232212312   >>