C312312111133131212111133133313231333133313331333133311212111113221211   >>    C31231211113313121211113313331323133313331333133313331121211111322121   <<    C312312111133131212111133133313231333133313331333133311212111113221213   >>      C312312111133131212111133133313231333133313331333133311212111113221212   >>