C312312111133131212111133133313331323133313233121111132322331211   >>    C31231211113313121211113313331333132313331323312111113232233121   <<    C312312111133131212111133133313331323133313233121111132322331213   >>      C312312111133131212111133133313331323133313233121111132322331212   >>