C3123223313331322121111331333133313331333121211113313232221233132211   >>    C312322331333132212111133133313331333133312121111331323222123313221   <<    C3123223313331322121111331333133313331333121211113313232221233132213   >>      C3123223313331322121111331333133313331333121211113313232221233132212   >>