scol scoo scop scor scot scpe scpl scpo scps scpt scr- scrc scre scrs scsc scsl scso scsr scst scsu sctc sctl scto sctr scts scul scup scur scut se-c se-e se-o se-s se-t se-u sec- secc sece seco secr secs sect secu seec seel seep seer sees seet seeu sele sell selo sels selt selu seoc seol seop sepe sepo sepp sepr seps sept sepu serc sere sero serp serr sers sert seru sesc sese seso sess sest set- setc sete setl seto sets sett seul seur slcc slcu slee slep sler sles slet sllp sloc sloe sloo slop slos slot slpp slps slrc slre slrp slrs slsc slst slsu slts sluc slue slup slur slut soce socl soco socr socs soec soel soeo soep soes sole soll solo solp solr sols solt sool soop soor soos soot sope sopo sopp sops sopu sore soro sorr sors sort soru sose soso soss sost sotc sote sotl soto sotp sots sotu soue soul soup sour sous sout spcc spco spcs spec spee spel sper spes spet splc sple splo splp splr spls spoc spoo spop spor spos spot spps spro sprs spse spso spsp spss spst sptc spto sptr spts spue spur spus sput srcc srct srec sreo sres sros srpc srps srpt srsp srtp srtr sscc ssce sscp sscs ssec ssee ssep sses sset sslc ssle sslp sslt ssoc ssop ssot sspc sspe sspl sspo ssps sspt ssrc ssrl ssrs sssc ssss sstc sstl sstp ssts stcc stcp stcs stcu stec stee stel steo step ster stes stet stlc stle stlo stlt stoe stol stoo stop stor stos stot stou stpp stps strc stre stro strs stru stss sttc sttr stuc stue stul stup stur stus stut suc- succ sucr sucs suee suel suer sues suet sueu sul- sulc sule sull sulo sulp sult sulu suor suos sup- supe supo supp supr sups supt sur- surc sure suro surp surr surs surt suru sus- suse suso susp suss sust susu sute suto sutu suus tccc tccu tcep tcos tcpo tctc tcts tcul tecl teco tecr tecs tect teec teel teer tees teet tel- telc tele tell telo tels telt telu teor teos tepe tepp tepu ter- terc tere tero terp terr ters teru tesc tese tesl teso tesp tess test tete teto tetr tets tett tetu teut tlco tlos tlrs toce toco toee toer toes toet tol- tole toll tolo tolt tolu tool toor toos toot top- tope topo topp tops topt topu torc tore toro torp torr tors tort toru tosc tose toso toss tost tosu totc tote toto totr tots tott toul toup tour tous tout tpcp tpcs tper tpls tpol tppp tppr tprs tpsc tpte tptp tptr tput trcc trcl tre- trec tree treo tres tret treu troc troe troo trop tros trot trou trpc trpe trpp trps trst trtc trte trtr truc true trus trut truu tscc tscp tsec tses tset tsol tsop tsos tsou tspo tsps tspt tsse tssr tsst tstc tsts tsup ttcp tteo tter ttoe ttop ttss tttt ttul tucc tuco tuel tuer tues tuet tule tull tulo tulp tulu tuor tuos tupe tupo tups tupu turc ture turo turp turr turs turt turu tusc tuss tust tute tutl tuto tuts tutt tutu tuuo u-rp uccp ucel uces ucos ucrc ucsc ucst ucsu ucut uele uell uers uess ulcc ulco ulee uleo ules ulle ullo ullr ulo- uloc ulos ulto ults ultt ulul ulus uocc uolc uor- uore upcs uplo upor upos uppc uppe uppp uppu upsc upse uptl upto upup ure- ures uret urle urls uro- urol uroo urpo urre urse urso urss ursu urte urts urup urur urus urut uscc usce usco uscs usee usel user uses uset usle uslp uslu usoc usoe usos uspc uspo uspp usps ussc usse ussr usss usst ussu ustc uste usto ustp usts usul usus utec utel utep uter utes utor utsc utsl utto uttu uucp uulu uuoc uuuu

-tree c-cor c-p-c c-pop c-tec ccccc cccsl ccell ccett ccpls ccrcl ccrel cctrl ccups ceco- cecos ceele ceelo ceere ceese celco celer celes cell- celle cello cells celo- celos celse celso celss celte celts ceoce ceoor ceorl ceose ceous cepes cepet cepos cepot ceppo cerc- cerce cerco cercs cerec cerer ceres ceret cero- ceroc ceros cerou cerps cerre cerro cerrs cerse cerss certe certs cerus cesce cescr cesse ceste cests cetes ceto- cette cetus cleco cleer cleet cleos clepe clept clerc clere cless clete cleto clett cloes cloop cloor cloos cloot clope clops clore clort close closo closs clost clote clots cloue clour clous clout clue- cluer clues clupe clurr cluse cluss clute cluts clutt co-co co-op cocc- cocce cocco coceo cocle cocol cocos cocto cocur cocus coel- coelo coels coepe coers coest coete coeur coeus cole- colee colel coleo coler coles colet coll- colle collo colls colo- colop color colos colp- colpo colre colts colup colur colus cooee cooer coole coolo cools coope coops coopt coore coors coost coote coots copce copec copel coper copes cople copos coppe coppo copps copr- copre copro copse copte copto copts copur copus coput corce core- coree corel corer cores coreu corlu coro- corol corop corot corpe corps corre corrl corrs corse corso corss corsu corte corto corts corus cosco cosec coser coses coset cosse cost- coste costo costs cotel coter cotes cotle cotos cotso cott- cotte cotto cotts cottu cotul couco couer coule coull coult coupe coups coure courl cours court couru couse coust couto couts coutu cpctc cpesc cplus crece creel creep creer crees crele crell creo- creop creos creot crepe crept crepu cresc crese creso cress crest crete cretu creu- creue creul creup crlcs croce croco crocs croes croll crooe crool croop croos croot cropc crope cropo crops crore crose cross crost crote crots crott croul croup crous crout crrel crres cruce cruel cruet crule crull cruls cruor crupe crure cruse crust cruts cselt csere cspot cspro csprs cstcc cteep ctree ctrlc ctrls ctrol cttee ctulu cuero cuers cueto cueup cules culet culle culls cullu