c-cor c-p-c c-pop ccccc ccups co-co co-op cocc- cocco cocos cocur cocus coops coors copos coppo copps copr- copro copur copus coro- corop corps corrs corso corss corsu corus cosco couco coups cours couru croco crocs croop croos cropc cropo crops cross croup crous cruor cspro csprs cuoco cupr- cupro curro currs curup cusco cusop cusps cusso occur ocros oocss ooooo oppos orcop orcos orcus oroco oroso orosu oruro ososo ossos ossur osusu ouoro po-po pocop pocos pocus poopo poops poors popco popop popos poppo popup porco porcs porcu poro- poros porro porur porus posco pours pouss procs proor prop- propp propr props pros- prosc proso pross pruss psor- psoup puppo puro- puros purrs purus puurs r-co- rcpsc ro-ro rocco rocor rocou roops ropos rosso rosss rosu roups rprop rrsps ruocs rusor russo s-o-r scoop scoor scops scorp scors scoup scour scroo scrsp scrus scups scurr so-so socus sooru sopor soppo sopup soror soros sorso sorsu sorus soss- sosus soups sours sous- spoor spor- sporo spors sposo sproc spurr spurs sssss sucr- supor supps supur surpu surur surus susso susus u-pop uorps urcos uros urour urous ursus urucu us-sc uscoc uscup usour usurp uuuuu