C312312111133131212111133131133133313331311331323133313232212232131   >>    C31231211113313121211113313113313331333131133132313331323221223213   <<    C312312111133131212111133131133133313331311331323133313232212232133   >>      C312312111133131212111133131133133313331311331323133313232212232132   >>