C312312111133131212111133133313231333133313331323221211111133132332211   >>    C31231211113313121211113313331323133313331333132322121111113313233221   <<    C312312111133131212111133133313231333133313331323221211111133132332213   >>      C312312111133131212111133133313231333133313331323221211111133132332212   >>