-tree c-cor c-p-c c-pop c-tec ccccc ccett ceco- ceere ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerec cerej cerer ceret cerje cero- ceroc cerre cerro certe ceto- cette co-co co-op cocc- cocce cocco coceo cocto coepe coete cojoc cooee cooer coope coopt coore coote copce copec coper coppe coppo copr- copre copro copte copto corce core- coree corer coro- corop corot corpe corre corte corto coter cott- cotte cotto cpctc crece creep creer creo- creop creot crepe crept crete croce croco crooe croop croot cropc crope cropo crore crote crott cteep ctree cttee e-pro ecorp ecto- ector ectot eeeee eepee eject eorre epcot eperc epopt epote erect erept erere eroor erore eroto error erte erter etete etoro etree etter j-pop j-roc j-top jeetp jeppe jeppo jeroo jerre jerte jetco jetee jeter jette jetto joe-e jooto jopee joppe joree jotto jrotc ocoee ocote ocree octet octo- octor oeco- oeppo oerje oo-er oocre ooooo opepe opere opper opter opto- optot optto orcet orcop oreco oreo- orere orero oroco oroer orret orter ortet ortoo otere otero otoce ototo otpor otter p-rep pcept pcert pctct pecco pecje peece peere peerj peert peete pepco pepee peppe pept- pepto perce perec perer peret peroj perot perre perro perte perto petco peter petr- petre petro pette petto po-po pocop poeej poete pooer poope poopo poore poort poote popco poper popet popop poppe poppo porco porec porer poret poro- porro porte porto potco potec potee poter potoc potoo potop potor potpe potro potte potto prece preco preop prete preto proer proor proot prop- prope propj propp propr propt prore prot- proto prtor pter- ptere ptero ptprc ptpre ptprj ptpro ptprr ptprt r-co- recce recco recep recet recpt rect- recte recto reece reepe reere rejto repco repec repet repop repor repot reppe repro reprt rere- reree reret retee reter retje retop retro rette retto ro-ro rocco rocor roero rooer roope roore roote roper roppe rorer roter roto- rotor rotot rotte rotto rprop rptor rtejr t-pop t-top teepe teoco tepco tepee tepet tepor teppo terce terco teret terje teror terre terro tert- teter tetr- tetro tette tjore tocco toco- toece toerr toeto toore topee toper topet topo- topor topot toppo topto torce toreo toret torje torpe torpo torre torro torte torto toter toto- totoe totoo totop totte tprot treco treer treet trejo trepp trept trere trete trett troco troee troop trop- trope tropo trott ttttt