C312312111133131212111133133313231333132311331333133313223313231121111222131   >>    C31231211113313121211113313331323133313231133133313331322331323112111122213   <<    C312312111133131212111133133313231333132311331333133313223313231121111222133   >>      C312312111133131212111133133313231333132311331333133313223313231121111222132   >>