C312312111133131212111133133313331333133312133313121133131211113313223322131   >>    C31231211113313121211113313331333133313331213331312113313121111331322332213   <<    C312312111133131212111133133313331333133312133313121133131211113313223322133   >>      C312312111133131212111133133313331333133312133313121133131211113313223322132   >>