C3123223313331322121111331333133313331333121211113313331313232213222221   >>    C312322331333132212111133133313331333133312121111331333131323221322222   <<    C3123223313331322121111331333133313331333121211113313331313232213222223   >>      C3123223313331322121111331333133313331333121211113313331313232213222222   >>