krts kruc krue kruk krur ksce ksck ksco kscr kscs kscu ksec ksee ksek kseo kser kset kske kskk ksko kskr ksks ksku ksoc ksok ksoo ksor ksos ksou ksro ksrr ksrs ksrt ksse ksso kssr ksss ksst kssu kstc kste kstk ksto kstr ksts kstt kstu ksue ksut ksuu ktcc ktce ktck ktco ktcr ktcs ktec ktee ktek ktkc ktke ktkk ktko ktkr ktks ktkt ktku ktoc ktoe ktok ktoo ktor ktot ktrc ktre ktrk ktro ktrr ktrs ktrt ktru ktsc ktso ktsr ktst ktsu kttc kttk ktto kttr ktts kttt kttu ktuc kucc kuce kuco kucr kuek kues kueu kuke kukk kuks kuku kuok kuoo kuos kure kurk kuro kurr kurs kurt kuru kusc kuso kust kusu kute kuto kutr kuts kutt kutu kuuk kuur kuuu o-eo occc occt oce ocee ocet ocke ocks ocos ocre ocro ocrr ocrs oct- octe octo octs ocur oec- oecc oeec oere oers oese oest okcu oker okes oket okko okok okor okot okre okro okso okto okur okus oocr ooer ooes ooku oooo ooos oore oort oose oost oots oous orce orco orcs ore- orec orek oreo orer ores orke orko oro- oroe orok oror oros orot orro orrs orse orsk orso orsu ortc orte orto orts orus oscc osce osco osec osee osek oser oses oset osku osoo osor osos osro osse osso ossu ostc oste ostr osts otee oter otes oto- otoe otok otoo otor otos otre otro otrs otse otso otsu otte otto otts ottu otur otus oucc ouer our- oure ouro ours ourt ouse oust out- oute outo outs ouu- rccc rccs rcet rcos rcsc rcss rctc rcts recc rece reck recr recs rect recu reek rees reet reke reko reks rekt reos reot reou rere rero rers rert reru rese reso ress rest rete reto retr rets rett reue reuk reus reut reuu rkos rkss rkts rocc roce rock roco rocs roer roes roet roke rokk roko rokr roks roku rook roor roos root rorc rore rork roro rort roru rosc rose roso ross rost rotc rote rotk roto rotr rots rott roue rouk rous rout rrrr rscc rscs rsee rsos rsre rsts rstu rtcc rtce rtee rtes rtss rtts ruce ruck ruct ruer rues ruet ruke rukk ruku ruok rurc rure ruro rurs ruru ruse rusk ruso russ rust rusu rute ruto ruts rutt rutu s-os sccc scce sccs scct scec scee scer scet sck- scok scoo scor scot scr- scrc scre scrs scsc scso scsr scst scsu sctc scto sctr scts scur scut se-c se-e se-k se-o se-s se-t se-u sec- secc sece seck seco secr secs sect secu seec seek seer sees seet seeu seke sekk seko sekt seku seoc seok serc sere serk sero serr sers sert seru sesc sese seso sess sest set- setc sete seto sets sett seur skee skeo sker skes sket skoe skor skot skrt skss skue skur skut soce sock soco socr socs soec soeo soes soke sokk soko soku sook soor soos soot sore soro sorr sors sort soru sose soso soss sost sotc sote sotk soto sots sotu soue souk sour sous sout srcc srct srec sreo sres sros srtr sscc ssce sscs ssec ssee sses sset ssoc ssot ssrc ssrs sssc ssss sstc ssts stcc stcs stcu stec stee stek steo ster stes stet stks stoe stok stoo stor stos stot stou strc stre strk stro strs stru stss sttc sttr stuc stue stuk stur stus stut suc- succ suck sucr sucs suee suer sues suet sueu suke suks suku suor suos sur- surc sure suro surr surs surt suru sus- suse susk suso suss sust susu sute suto sutu suus tccc tccu tcos tctc tcts teck teco tecr tecs tect teec teek teer tees teet teke teok teor teos ter- terc tere terk tero terr ters teru tesc tese teso tess test tete teto tetr tets tett tetu teuk teut tkos tkts toce tock toco toee toek toer toes toet toke toko toku took toor toos toot torc tore tork toro torr tors tort toru tosc tose tosk toso toss tost tosu totc tote toto totr tots tott touk tour tous tout trcc tre- trec tree trek treo tres tret treu troc troe troo tros trot trou trst trtc trte trtr truc true truk trus trut truu tscc tsec tses tset tsks tsos tsou tsse tssr tsst tstc tsts tteo tter ttoe ttss tttt tucc tuck tuco tuer tues tuet tuke tuko tuks tuor tuos turc ture turk turo turr turs turt turu tusc tusk tuss tust tute tuto tuts tutt tutu tuuo uces ucos ucrc ucsc ucst ucsu ucut uers uess ukcc ukek ukes ukeu ukko ukok ukrc uksc ukur uocc uoke uor- uore ure- ures uret urke uro- urok uroo urre urse urso urss ursu urte urts uruk urur urus urut us-k uscc usce usco uscs usee user uses uset uske usoc usoe usos ussc usse ussr usss usst ussu ustc uste usto usts usus utec uter utes utor utsc utto uttu uuoc uuuu

-tree c-cor c-tec ccccc ccett ceco- cecos ceere ceese ceoce ceoor ceose ceous cerc- cerce cerco cercs cerec cerer ceres ceret cerke cero- ceroc ceros cerou cerre cerro cerrs cerse cerss certe certs cerus cesce cescr cesko cesse ceste cests cetes ceto- cette cetus co-co cocc- cocce cocco coceo cocke cocks cockt cocos cocto cocur cocus coers coest coete coeur coeus coker cokes coket cokk- cokot cooee cooer cooke cooks cookt coore coors coost coote coots corce core- coree corer cores coreu corke corks coro- corot corre corrs corse corso corss corsu corte corto corts corus cosco cosec coser coses coset cosse cost- coste costo costs coter cotes cotos cotso cott- cotte cotto cotts cottu couco couer coure cours court couru couse coust couto couts coutu crece creek creer crees creke creo- creos creot cresc crese creso cress crest crete cretu creu- creue croce crock croco crocs croes croke crokt crooe crook croos croot crore crose cross crost crote crots crott crouk crous crout crres cruce cruck