C111123313121111121111331333133313331322121111331333133313331331121111121211211   >>    C11112331312111112111133133313331333132212111133133313331333133112111112121121   <<    C111123313121111121111331333133313331322121111331333133313331331121111121211213   >>      C111123313121111121111331333133313331322121111331333133313331331121111121211212   >>