occn occt oce ocee ocef ocet ocfp ocom ocon ocpm ocpp ocre ocro ocrr oct- octe octo ocum ocur oec- oecc oeec oeme oen- oeno oere oerm oeuf ofcr ofem ofen ofer off- offc offe offo offr offu ofme ofno ofor ofre oftp omee omen omeo omer omet omn- omne omo- omoe omon omoo omor ompt omre omro omuo onc- once oncf onco onct one- onec onee oneo onep oner onme onne onno onon onor onpt onpu ont- ontc onto onue onup onur onut oocr ooer ooff oome oone oont oooo oore oort ootp opec open opep oper opet opo- opon opor oppo optn opto orce orco ore- orec orem oren oreo orer orfe orff orfu orme ormn ormo ornc orne orno oro- oroe orof orom oron oror orot orpc orpe orro ortc orte orto orum orup otee otem oten otep oter otfc otfp oto- otoe otof oton otoo otor otpp otre otro otte otto ottu otur oucc ouen ouer oufc oufe ouff oume oun- oune oupe our- oure ourn ouro ourt out- oute outo ouu- pccc pcce pcem pcep pcer pcfc pcnt pcoe pcom pcpm pcpn pcpp pcrc pcre pcrf pcte pcun pece peco pecr pect peec peen peep peer peet pefc peff pemt pen- penc pene penn peno pent penu peon peor peou pepe pepo per- perc pere perf perm pern pero perp perr pert peru pete petn peto petr pett peun peur peut pfce pfet pfff pffr pfft pfte pmcc pmmp pmmu pmpm pmpo pmrc pmrt pmut pnec pnet pneu pnnm pnom pnon pnot pnpo pnpp pnro pntm pntr pnup poce poco poem poer poet poff pome pomo pomp pomu ponc pone pono ponp pont poof poon poop poor poot pop- popc pope popo popp popt porc pore porn poro porr port potc pote potf poto pott potu pouf poum poun poup pour pout ppcc ppcm ppen pper pppn pppo pppp pprc pprf pprm ppru pptn pptt ppur prcc prcf prcp pre- prec pree pref prem pren prep pret preu prfc prmc prnp pro- proc proe prof prom pron proo prop prot prou prrm prtc prtm prtp prtr prue pruf prum prut pruu ptcc pten pter ptmp ptop ptrf pttc pu-e puce pueo puer puet pueu puff puft pume pump punc pune puno punt punu pupe pupu pur- pure puro purp purr puru put- pute puto putt putu puuc rccc rcep rcet rcfc rcmp rcnr rcon rcpo rcpt rctc recc rece recm recp recr rect recu reef reem reen reep reet refe reff refn refr reft refu reme remn remo remp rene renn reno rent renu reof reop reot reou repe repo repp repr rept repu rere rero rert reru rete reto retr rett reue reuf reup reut reuu rfef rfem rffc rftc rmon rmrp rmtu rnco rncp rnnt rnot rntp rnut rocc roce roco roen roer roet rofc rofe roff rofo rome romm romo romp ronc rone rono ront roof room roon roop roor root rope ropo rorc rore roro rort roru rotc rote rotn roto rotr rott roue rouf roum roun roup rout rpet rpfc rpoe rpof rpon rppn rptn rrfc rrmc rrmp rrrr rrum rrun rtcc rtce rtcm rtee rtfc rtfm rtmc rtmp rttp ruce ruct ruen ruer ruet rufc rufe ruff rufo ruft rume rumm rumo rump rumt runc rune runf runn runo runt rupe rupp rupt rurc rure ruro rurp ruru rute ruto rutt rutu ruun t-mo tccc tccu tcep tcfc tcnn tcom tcon tcpo tctc teco tecr tect teec teef teem teen teer teet tefc teff teft teme temo temp temu tenc tene tenn teno tenp tent tenu teom teon teor tepe tepp tepu ter- terc tere terf term tern tero terp terr teru tete teto tetr tett tetu teut tfcu tfec tfnp tfot tfpt tftc tftp tmcc tmcm tmen tmep tmnt tmou tmro tmtt tncc tnef tnfc tnut toce toco toee toen toer toet toff tofo toft tofu tome tomm tomo tomp tomt tone tonn tono tonu toof toom toon toor toot top- tope topf topo topp topt topu torc tore torf torm torn toro torp torr tort toru totc tote totm toto totr tott toum toun toup tour tout tpcp tper tpmt tpon tppp tppr tpte tptp tptr tput trcc tre- trec tree tref trem tren treo tret treu trfc trfm trfr trmu trno troc troe trom tron troo trop trot trou trpc trpe trpm trpn trpp trtc trte trtr truc true trun trut truu ttcn ttcp tten tteo tter ttfc ttff ttfn ttoe tton ttop tttt tucc tuco tuen tuer tuet tufc tufe tuff tufm tufo tuft tufu tume tump tumu tunc tune tunn tuno tunu tuor tupe tupo tupu turc ture turf turm turn turo turp turr turt turu tute tuto tutt tutu tuum tuuo u-rp uccp ucmc ucom ucon ucrc ucut ueno ufcu ufer uffe uftp umec umer umet umff ummo umno umoe umor umpc umpe umut uncc unce uncf unco uncp unct unec unee unef unen uner unfp unmc unmr unne unno unon unop unpc unrf unro unte unto unum unut uocc uofm uofo uomo uone uor- uore upen upmc upme upne upnp upon upor uppc uppe uppp uppu upto upup ure- uret urfe urff urft urne uro- urom uroo urpo urre urte urum urun urup urur urut utec utep uter utfo utmp utne utor utto uttu uucp uuen uuno uuoc uutf uuuu

-form -tree c-cor c-met c-one c-p-c c-pop c-tec ccccc ccett ccnet ceco- cecon cecum cecun ceene ceere cefcu cefor cemec cemmo cemre cence ceneu ceno- cenon cenpf cenpm cenpn cenpo cenpt cent- cento centr ceoce ceoor ceorn cepet cepno cepot ceppo cerc- cerce cerco cerec ceren cerer ceret cerne cerno cero- ceroc ceron cerou cerre cerro certe ceten cetme ceto- ceton cette cetun cfour cfu-e cmene cmere cmune cneru cnnfn cnnnn cnote cntrc co-co co-np co-op cocc- cocce cocco coceo cocom cocon cocto cocum cocur coen- coepe coete coeur cofer coffe cofre cofur comco comec comen comer comet comme commn commo commr comon comot compo compt comte comu- comun conco concr coner