C3123223313331322121111331333133313331333121211113313331333233213222211   >>    C312322331333132212111133133313331333133312121111331333133323321322221   <<    C3123223313331322121111331333133313331333121211113313331333233213222213   >>      C3123223313331322121111331333133313331333121211113313331333233213222212   >>