C312312111133131212111133133313231333133313331323331312113313223313111211   >>    C31231211113313121211113313331323133313331333132333131211331322331311121   <<    C312312111133131212111133133313231333133313331323331312113313223313111213   >>      C312312111133131212111133133313231333133313331323331312113313223313111212   >>