C312312111133131212111133133313231333133313331333133311212111113222331   >>    C31231211113313121211113313331323133313331333133313331121211111322233   <<    C312312111133131212111133133313231333133313331333133311212111113222333   >>      C312312111133131212111133133313231333133313331333133311212111113222332   >>