C312312111133131212111133133313231333133313331322133313123132231   >>    C31231211113313121211113313331323133313331333132213331312313223   <<    C312312111133131212111133133313231333133313331322133313123132233   >>      C312312111133131212111133133313231333133313331322133313123132232   >>