C31231211111133131211113313331333132333133313121211113313221132211   >>    C3123121111113313121111331333133313233313331312121111331322113221   <<    C31231211111133131211113313331333132333133313121211113313221132213   >>      C31231211111133131211113313331333132333133313121211113313221132212   >>