cccc cccp cccu ccnc ccnp ccnr ccnu ccoc ccpn ccpp ccpr ccrc ccrp ccuc ccup ckck ckco cknc ckoc ckoo ckor ckpc ckpr ckrc cnco cncp cnrc cnrr cock coco cocp cocu cok- coko con- conc conk conn cono cook coon coop copo copp copr cor- corc cork corn coro corp corr couk coun coup cour cpcu crcc crcr crkc crkp croc crok cron croo crop cror crpc cruk crun crup cucc cuck cucn cuk- cuno cunp cuon cupo cupp cupr curn curo curr kccc kcck kccr kccu kckc kckk kckn kcko kckr kcno kcnp kcnr kcon kcor kcou kcpc kcpn kcpo kcpr kcpu kcrc kcrn kcro kcrp kcrr kcru kcuk kcup kkck kkcn kkco kkcr kkkk kknn kkno kknu kkon kkoo kkor kkpc kkpk kkpn kkrc kkrk kkrn kkro kkrr kkup kkuu knck kncn knco kncr kncu knkk knnk knnr knoc knok knon knop knor knou knpc knpr knrk knro knuk knur kock kocn kocp kokc kokk kokn koko kokp kokr koku konc konk kono konp kooc kook koon kooo koop koor koou kopn kopp kopr kopu korc kork korn koro korr koru kour kouu kpcc kpcr kpkk kpkr kpnc kpno kpnp kpoc kpok kpoo kpop kpou kppc kppk kppo kppp kppr kprc kprk kprn kpro kprp kprr kpru kpur krcc krcn krco krcu krkc krkk krkn krko krkr krku krnk krnn krno krnp krnu kroc krok kroo krop kror krpr krpu krrc krrk krrn krro krrr kruc kruk krun krup krur kucc kuco kucp kucr kukk kukn kuku kunc kunk kuno kunp kunr kunu kuok kuon kuoo kuop kupr kupu kurk kuro kurr kuru kuuk kuur kuuu n-up nccc nccn nccp nccr nccu ncnc ncoc ncor ncpc ncrc ncrp ncuk nkok nkor nnnn nnpr nock noco noko non- nonn nono nonu noo- nook noon nooo noop noor nor- norc nork norn noro norr noun noup nour npcc nppc nroc nron nrpc nrpn nrrc nuck nucu nuku nunc nunk nunn nuno nuoc nuon nurc nurn nurp nurr nuru nuuk occc occn ocon ocpp ocro ocrr ocur okcu okko okno okok okon okor okpo okro okun okur onc- onco onkp onno onon onor onpu onup onur oocr ooku oooo opo- opon opor oppo orco orko ornc orno oro- orok oron oror orpc orro orup oucc oun- our- ourn ouro ouu- pccc pcpn pcpp pcrc pcun pnkp pnon pnpo pnpp pnro pnup pock poco poko poku ponc ponk pono ponp pook poon poop poor pop- popc popo popp porc pork porn poro porr pouk poun poup pour ppcc pppn pppo pppp pprc ppru ppur prcc prcp prnp pro- proc pron proo prop prou pruu puck puku punc punk puno punu pupu pur- puro purp purr puru puuc rccc rcnr rcon rcpo rnco rncp rocc rock roco rokk roko rokr roku ronc ronk rono rook roon roop roor ropo rorc rork roro roru rouk roun roup rpon rppn rrrr rrun ruck rukk rukn ruku runc runk runn runo ruok rupp rurc ruro rurp ruru ruun u-rp uccp ucon ucrc ukcc ukko uknc ukok ukon ukrc ukup ukur uncc unco uncp unkn unko unno unon unop unpc unro uocc uor- upnp upon upor uppc uppp uppu upup uro- urok uroo urpo uruk urun urup urur uucp uuno uuoc uuuu