C312312111133131212111133133313231333133313331322121111331333132313311222121   >>    C31231211113313121211113313331323133313331333132212111133133313231331122212   <<    C312312111133131212111133133313231333133313331322121111331333132313311222123   >>      C312312111133131212111133133313231333133313331322121111331333132313311222122   >>