C312312111133131212111133133313331323133313233121111331322121111131133132233121   >>    C31231211113313121211113313331333132313331323312111133132212111113113313223312   <<    C312312111133131212111133133313331323133313233121111331322121111131133132233123   >>      C312312111133131212111133133313331323133313233121111331322121111131133132233122   >>