C132233133112121111331333133313331333132332121211113313232213223313211   >>    C13223313311212111133133313331333133313233212121111331323221322331321   <<    C132233133112121111331333133313331333132332121211113313232213223313213   >>      C132233133112121111331333133313331333132332121211113313232213223313212   >>