c-cor c-p-c c-pop ccccc ccrcl cloop cloor clour clurr co-co co-op cocc- cocco cocol cocur coll- collo colo- colop color colp- colpo colup colur coolo coppo copr- copro copur corlu coro- corol corop corrl couco coull courl couru croco croll crool croop cropc cropo croul croup crull cruor cullu culur cuoco cupr- cupro cupul curll curlo curlu curro curup l-pop loco- locro lollo lolol lopou lorup louro lucur luluc lulul lupul lurup occur ocllo ocul- oculo ollup ollur olour ooooo oploo oppol orcop orlop oroco orolu oruro oullo ouoro ourol ploop plopp plopu plupp po-po pocol pocop polco pollo pollu polop polur poopo popco poplr popop poppo popup porco porcu poro- porro porur poulp proll prolo proor prop- propl propp propr pull- pullu puppo puro- purul r-co- rcolo ro-ro rocco rocor rocou rollc rollo roull rprop rucul rullo u-pop ullur uloop ulpur ululu uluru upolo upolu urour urucu uuuuu