c-cor c-p-c c-pop ccccc ccrcl cfour clcff cloff cloof cloop cloor clour cluff clurr co-co co-op cocc- cocco cocol cocur cofur coll- collo colo- colop color colp- colpo colup colur coolo coppo copr- copro copur corfo corfu corlu coro- corol corop corrl couco coull courl couru cpcfc croco croll crool croop cropc cropo croul croup crull cruor cullu culur cuoco cupof cupr- cupro cupul curll curlo curlu curro curup flocc floop floor floro floru flour fluff fluo- fluor flurr folco follo forro forur fouro frcpc froop froup fu-fu fuco- fulco fullf fullo fulop fulup fuoco furo- furor l-pop loco- locro lofou lollo lolol lopou lorup louro lucur luluc lulul lupul lurup occur ocllo ocul- oculo offof ofour ofpop ollup ollur olour ooooo oploo oppol orcop orfor orful orlop oroco orolu oruro oullo ouoro ourol pforp ploop plopp plopu pluff plupp po-po pocol pocop polco pollo pollu polop polur poopo popco poplr popop poppo popup porco porcu poro- porro porur pouff poulp proff proll prolo proof proor prop- propl propp propr pull- pullu puppo puro- purul r-co- rcolo ro-ro rocco rocor rocou rofor rolfo rollc rollo roull rprop rucul ruffo rufo- rufol rullo u-pop ufofu ullur uloop ulpur ululu uluru upfor upoff upolo upolu urour urucu uuuuu