C312312111133131212111133131133133313331323223313331311211112131   >>    C31231211113313121211113313113313331333132322331333131121111213   <<    C312312111133131212111133131133133313331323223313331311211112133   >>      C312312111133131212111133131133133313331323223313331311211112132   >>