-er c-- ccc cce cck cco ccr cct ce- cec cee cek ceo cer cet ckc cko ckt co- coc coe cok coo cor cot crc cre crk cro crr crt ctc cte ctk cto ctr ctt ec- ecc ece eck eco ecr ect eec eee eek eeo eer eet ekc eke eko ekr ekt eo- eoc eoe eok eoo eor eot erc ere erk ero err ert etc ete etk eto etr ett k-t kcc kce kck kcr kct ke- kec kee kek keo ker ket kkc kke kkk kkr kkt koc koe kok koo kor kot krc krk kro krr krt ktc kte ktk kto ktr ktt oc- occ ock oco ocr oct oec oee oeo oer oet okc oke okk oko okr oo- ooc ook ooo oor oot or- orc ore ork oro orr ort ot- otc ote otk oto otr ott rcc rce rco rcr rct re- rec ree rek reo rer ret rkc rke rkk rko rkt roc roe rok roo ror rot rrc rrk rrr rrt rtc rte rtk rto rtr rtt tcc tce tck tco tcr tct te- tec tee tek teo ter tet tkc tke tkk tko tkr tkt to- toc toe tok too tor tot trc tre trk tro trr trt ttc tte ttk tto ttr ttt

cccc ccee ccoc ccrc ccre ccrt cctc cctt cec- cece ceco cect ceec ceke ceor cer- cerc cere cero cert cet- cete ceto ckck ckco cker ckoc ckoo ckor ckot ckrc coce cock coco coct cok- coke coko cook coot cor- corc core cork coro corr cort cotc cote coto cott crcc crce crcr cre- crec cree creo cret crkc croc croe crok croo cror crot crrt crtc ctec ctor ctot ctrc eccc ecce ecco ecct ecko eco- ecot ecrc ecrr ect- ectc ecto eeee eeke eeoc eerc eero eetc eete ekco ekek eker eket eore eotc eoto ercc erce erec erer eret erke eroc eroe eroo errc erre erro etcc etco etec etee eter etoe etok etre etro ette etto kccc kcck kccr kcct kcec kcee kceo kcet kckc kckk kcko kckr kcoe kcor kcot kcrc kcro kcrr kcrt kctc kcte kcto keck keco kecr keek keer keet kekc keke keko keok ker- kerc kere kerk kero kerr kert ket- ketc kete ketk keto ketr kett kkck kkco kkcr kkct kkkk kkoo kkor kkot kkrc kkre kkrk kkro kkrr kkrt kktc kktk kock koct kokc koke kokk koko kokr kooc kook kooo koor koot korc kore kork koro korr kort kotc kote kotk koto kotr kott krcc krce krco krec kree krek kreo kret krkc krke krkk krko krkr kroc kroe krok kroo kror krrc krre krrk krro krrr krrt krtc krtk krto krtr ktcc ktce ktck ktco ktcr ktec ktee ktek ktkc ktke ktkk ktko ktkr ktkt ktoc ktoe ktok ktoo ktor ktot ktrc ktre ktrk ktro ktrr ktrt kttc kttk ktto kttr kttt o-eo occc occt oce ocee ocet ocke ocre ocro ocrr oct- octe octo oec- oecc oeec oere oker oket okko okok okor okot okre okro okto oocr ooer oooo oore oort orce orco ore- orec orek oreo orer orke orko oro- oroe orok oror orot orro ortc orte orto otee oter oto- otoe otok otoo otor otre otro otte otto rccc rcet rctc recc rece reck recr rect reek reet reke reko rekt reot rere rero rert rete reto retr rett rocc roce rock roco roer roet roke rokk roko rokr rook roor root rorc rore rork roro rort rotc rote rotk roto rotr rott rrrr rtcc rtce rtee tccc tctc teck teco tecr tect teec teek teer teet teke teok teor ter- terc tere terk tero terr tete teto tetr tett toce tock toco toee toek toer toet toke toko took toor toot torc tore tork toro torr tort totc tote toto totr tott trcc tre- trec tree trek treo tret troc troe troo trot trtc trte trtr tteo tter ttoe tttt

-tree c-cor c-tec ccccc ccett ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer ceret cerke cero- ceroc cerre cerro certe ceto- cette co-co cocc- cocce cocco coceo cocke cockt cocto coete coker coket cokk- cokot cooee cooer cooke cookt coore coote corce core- coree corer corke coro- corot corre corte corto coter cott- cotte cotto crece creek creer creke creo- creot crete croce crock croco croke crokt crooe crook croot crore crote crott ctree cttee ecker ecto- ector ectot eecke eeeee ekeko ekker ektor eorre erect erere erkec erkko erkoc eroor erore eroto error erte erter eteke etete etoko etoro etree etrek etter kecer keere kekec kerek keret kerre ketek keter keto- kette ketto ko-ko kocek kocer kocke koker koket kokko kokor kokot kokre korck korec korek korke koror korro korte kotor kotto kre-o kreek kreke kreo- krete krock kroke kroot krtok ocker ockro ocoee ocote ocree octet octo- octor oeco- okeke okere oketo okker okoc okoro oo-er oocre ooooo orcet oreck oreco oreo- orere orero oroco oroer oroke orret orter ortet ortok ortoo otere otero otoce ototo otrok otter r-co- recce recco recet recke rect- recte recto reece reere rekke rere- reree reret retee reter retro rette retto ro-ro rocco rocke rocko rocor roero rokee roker roket rokke rokkk rokot rokto rooer rooke roore roote rorer rorke roter rotko roto- rotor rotot rotte rotto rt-rk teeko teket tekke tekko teoco terce terco terek teret terok teror terre terro tert- teter tetr- tetro tette tocco toco- toece toerr toeto toker tokke tokko toko- tokor tooke toore torce toreo toret torke torok torre torro torte torto toter toto- totoe totok totoo totte treck treco treer treet trere trete trett trock troco troee troke trott tteok ttttt

ceecee cerco- cerete cerote certco cetore cocco- cockee cocker cocket cococo cocto- coerce coo-er coocoo cookee cooker cookoo cooter corect corker correk corteo cortot cotote cotter crecco creeke creete creket creote crocco crocer croker croket crooke croote eckert ecotec ectro- eerect ekero eototo eroto- errett etcetc etoeot ettore k-rock k-tree keeker keokee kerker kertee kertok ketter kockte kokoro kokott