C31231211111133131211113313331312111113331311331333132322331323233211   >>    C3123121111113313121111331333131211111333131133133313232233132323321   <<    C31231211111133131211113313331312111113331311331333132322331323233213   >>      C31231211111133131211113313331312111113331311331333132322331323233212   >>