-ene cccc cccp cccs cccu ccee ccnc ccne ccnp ccnr ccns ccnu ccpe ccpn ccpp ccpr ccps ccrc ccre ccrp ccrs ccsn ccsp ccss ccuc ccup ccus cec- cece cecp cecs ceec cees ceke cen- cene cens cepc cepe cepp cepr ceps cer- cerc cere cern cerp cers cesc cese cesp cesr cess ckck ckcs cken cker cknc ckns ckpc ckpr ckrc cncp cnep cnes cnrc cnrr cnss cpce cpcs cpcu cpep cper cpns cpps cpre cprs cpsc cpsk cpsr cpsu cpus crcc crce crcr cre- crec cree cren crep cres creu crkc crkp crne crns crpc crps crsp crss crue cruk crun crup crus cscc csce cscr cscs csec csee csep cser csks csne csnp cspc cspe csps csrc csrs csse cssr csup csur csus cucc cuce cuck cucn cuek cuer cues cuk- cuke cune cunp cupe cupp cupr cups cure curn curr curs cusk cusp cuss cusu eccc ecce eces ecks ecne ecpp ecrc ecrr ecru ecsc ecse ecsp ecss ecsu ecus eecs eeee eees eeke eeks eens eeps eerc eers eese eesk ekek eken eker ekes ekne ekpe ekur ence encs enee ener enes enke enkr ennc enne enns ennu enp- enrs ense ensu enue enur enus epcc epec epee epen eper epes epns eppc eppp epps eprp eprs epsc epsp epss epus ercc erce ercp erec eren erer eres erke erks erne erns erpe erps errc erre errs erse eruc erur erus esce escr escs escu esee esek esen eser eses eske esks esku esne espc espe espn espp esps esse essp essu esus euer eur- eurc eure euse kccc kcck kccr kccu kcec kcee kcep kceu kckc kckk kckn kckr kcnp kcnr kcns kcpc kcpn kcpr kcps kcpu kcrc kcrn kcrp kcrr kcrs kcru kcsc kcse kcsn kcsp kcsr kcss kcsu kcue kcuk kcup keck kecr keek keen keep keer kees kekc keke keks keku ken- kene kenk kenn kenr kens kenu kep- kepc kepe kepn keps kepu ker- kerc kere kerk kern kerp kerr kers keru kesc kesk kesn kesp kesr kess keun keup keur keus kkck kkcn kkcr kkcs kken kkkk kkne kknn kkns kknu kkpc kkpk kkpn kkps kkrc kkre kkrk kkrn kkrr kkrs kkse kksn kksp kksr kkss kksu kkup kkus kkuu knce knck kncn kncr kncu knec knee knek knen knep knes kneu knkk knnk knnr knns knpc knpr knrk knrs knsc knse knsk knsn knsp knsr knss knsu knue knuk knur knus kpcc kpcr kpcs kpek kper kpke kpkk kpkr kpnc kpne kpnp kpns kppc kppk kppp kppr kprc kpre kprk kprn kprp kprr kprs kpru kpsc kpsp kpsu kpur kpus krcc krce krcn krcs krcu krec kree krek kren kres kreu krkc krke krkk krkn krkr krks krku krne krnk krnn krnp krnu krpr krps krpu krrc krre krrk krrn krrr krrs krsc krse krsk krsn krsr krss krsu kruc krue kruk krun krup krur ksce ksck kscn kscr kscs kscu ksec ksee ksek ksen ksep kser kske kskk kskn kskr ksks ksku ksnc ksnk ksnn ksnp ksnr ksns kspc kspe kspk kspn kspr ksps ksrn ksrp ksrr ksrs ksse kssn kssr ksss kssu ksue ksun ksup ksuu kucc kuce kucp kucr kuek kuen kues kueu kuke kukk kukn kuks kuku kunc kune kunk kunp kunr kuns kunu kupe kupr kups kupu kure kurk kurr kurs kuru kusc kusn kusp kusu kuuk kuur kuuu n-up nccc nccn nccp nccr nccs nccu ncec ncee ncen ncep ncer nces ncnc ncpc ncrc ncre ncrp ncsc ncse ncss ncue ncuk necc nece neck necr necs neen neep neer nees neke neku nene nens nenu nepc nepe nepr neps nerc nere nerk nerr ners neru nesc nese nesn nesr ness neuc neue neuk neun neur neuu nksp nnes nnnn nnpr nnss npcc npes nppc npss nrcs nren nrpc nrpn nrps nrrc nrsc nrsp nscc nscs nsec nsep nser nskk nsnr nspc nsps nsrc nssc nsse nssp nssr nsss nuce nuck nucs nucu nuee nuer nuke nuku nunc nune nunk nunn nuns nupe nups nurc nure nurn nurp nurr nurs nuru nuse nuss nusu nuuk pccc pcce pccs pcep pcer pcks pcns pcpn pcpp pcps pcrc pcre pcse pcun pece peck pecr pecs peec peek peen peep peer pees peke pekk pen- penc pene penk penn pens penu pepe peps per- perc pere perk pern perp perr pers peru pese pess pesu peun peur pkcs pnec pnes pneu pnkp pnpp pnsc pnup ppcc ppcs ppen pper pppn pppp ppps pprc ppru ppss ppur prcc prcp prcs pre- prec pree prek pren prep pres preu prnp prps prrs prsc prse prss prue prus pruu pscu psec psnc psnr pspp pspr psps psrk psrp pssc psse pu-e puce puck puer pueu puke puku punc pune punk puns punu pupe pups pupu pur- pure purp purr purs puru pusk puss puuc rccc rccs rcep rcnr rcps rcsc rcss recc rece reck recp recr recs recu reek reen reep rees reke reks rene renk renn rens renu repe repp repr reps repu rere rers reru rese resn resp ress reue reuk reup reus reuu rkss rncp rncs rnsp rpcs rppn rpps rrrr rrsp rrun rscc rscn rscs rsee rsnn rsnr rspk rsps rsre ruce ruck ruen ruer rues ruke rukk rukn ruku runc rune runk runn runs rupe rupp rurc rure rurp rurs ruru ruse rusk russ rusu ruun sccc scce sccp sccs scec scee scep scer sck- scnr scpe scps scr- scrc scre scrn scrs scsc scsn scsr scsu scun scup scur se-c se-e se-k se-n se-s se-u sec- secc sece seck secn secr secs secu seec seek seen seep seer sees seeu seke sekk seku sene senn senr sens sepe sepn sepp sepr seps sepu serc sere serk sern serp serr sers seru sesc sese sess seur skee sken skep sker skes skn- skpc skss skue skun skup skur sncc sncp snee snep sner snes snns snpp snrk snrs snur snus spcc spcs spec spee spek spen sper spes spke spkr spne spns spps sprs spse spsp spss spue spun spur spus srcc srec sres