C31231211111133131211113313331333133313332233132313331313213121   >>    C3123121111113313121111331333133313331333223313231333131321312   <<    C31231211111133131211113313331333133313332233132313331313213123   >>      C31231211111133131211113313331333133313332233132313331313213122   >>