prtc prtp prtr prud prue prus prut pruu psco pscu psdc psdp psdr psds psec psoc psos psou pspp pspr psps psrd psrp pssc psse psso psst psts pstu ptcc ptdc pter ptop ptox ptpd ptrd ptsd pttc pu-e puce pudo puds pudu pued pueo puer puet pueu pupe pups pupu pur- pure puro purp purr purs puru pusd puss pust put- pute puto puts putt putu puuc puxe pxes rccc rccs rcdc rcde rcds rcep rcet rcos rcpd rcpo rcps rcpt rcrd rcsc rcsd rcss rctc rcts rder rdoc rdos rdpc rdso recc recd rece recp recr recs rect recu redc redd rede redo redr reds redu redx reed reep rees reet reod reop reos reot reou repe repo repp repr reps rept repu rerd rere rero rers rert reru rese reso resp ress rest retd rete reto retr rets rett reue reup reus reut reuu reux rexx rocc roce roco rocs rodd rode rodo rods roed roer roes roet rood roop roor roos root roox rope ropo rops rorc rore roro rort roru rosc rose roso rosp ross rost rotc rote roto rotr rots rott roud roue roup rous rout roux roxo rpcs rpdp rpet rpoe rpos rpps rptd rpts rred rrrr rrsp rscc rscs rsdd rsds rsee rsos rspo rsps rsre rstp rsts rstu rtcc rtce rtdt rtee rtes rtex rtps rtss rttp rtts ruce ruct rudd rude rudo rudp ruds rued ruer rues ruet rupe rupp rupt rurc rurd rure ruro rurp rurs ruru ruse ruso russ rust rusu rute ruto ruts rutt rutu ruud rxes s-os sccc scce sccp sccs scct scdc scdp scds scec scee scep scer scet scoo scop scor scot scox scpe scpo scps scpt scr- scrc scre scrs scsc scsd scso scsr scst scsu sctc sctd scto sctr scts scud scup scur scut sdcc sdco sddc sdds sdep sder sdes sdet sdot sdpr sdps sdrc sdrs sdsc sdss sdsu se-c se-d se-e se-o se-s se-t se-u se-x sec- secc secd sece seco secr secs sect secu sede sedo seds seec seed seep seer sees seet seeu seex seoc seod seop sepd sepe sepo sepp sepr seps sept sepu sepx serc serd sere sero serp serr sers sert seru sesc sese seso sess sest set- setc sete seto sets sett setx seur seux sex- sexe sexp sext soce soco socr socs socx sodd sode sodo sods sodu soec soeo soep soes sood soop soor soos soot sopd sope sopo sopp sops sopu sord sore soro sorr sors sort soru sose soso soss sost sotc sote soto sotp sots sotu soud soue soup sour sous sout soxs spcc spco spcs spdc spde spdp spdr spdt spec sped spee sper spes spet spex spoc spod spoo spop spor spos spot spox sppd spps sprd spro sprs spsd spse spso spsp spss spst sptc spto sptr spts spud spue spur spus sput srcc srct srde srec sreo sres sros srpc srps srpt srpx srsd srsp srtp srtr sscc ssce sscp sscs ssdc ssdd ssdp ssec ssee ssep sses sset ssex ssoc ssop ssot sspc sspe sspo ssps sspt sspx ssrc ssrs sssc ssss sstc sstd sstp ssts stcc stcp stcs stcu stds stec sted stee steo step ster stes stet stex stod stoe stoo stop stor stos stot stou stox stpd stpp stps strc strd stre stro strs stru stss sttc sttd sttr stuc stud stue stup stur stus stut stux suc- succ sucr sucs sudd sude sudo suds sued suee suer sues suet sueu suor suos sup- supe supo supp supr sups supt sur- surc surd sure suro surp surr surs surt suru sus- susd suse suso susp suss sust susu sute suto sutu suus sux- suxe suxt sxde tccc tccu tcdd tcep tcos tcpo tctc tcts tdes tdor tdse tdss teco tecr tecs tect tedd tede teds tedx teec teed teer tees teet teor teos tepe tepp tepu ter- terc tere tero terp terr ters teru tesc tesd tese teso tesp tess test tete teto tetr tets tett tetu tetx teut text toce toco todd tode todo tods todt todu toed toee toer toes toet tood toor toos toot top- topd tope topo topp tops topt topu torc tord tore toro torp torr tors tort toru torx tosc tose toso toss tost tosu tosx totc totd tote toto totr tots tott toup tour tous tout tox- toxo toxs toxt tpcd tpcp tpcs tpdu tped tper tppd tppp tppr tprs tpsc tpte tptp tptr tput trcc tre- trec tred tree treo tres tret treu trex troc trod troe troo trop tros trot trou trox trpc trpe trpp trps trsd trst trtc trte trtr truc trud true trus trut truu trux tscc tscp tsec tses tset tsop tsos tsou tspo tsps tspt tsse tssr tsst tstc tsts tsup ttcp tteo tter ttoe ttop ttss tttt tucc tuco tude tudu tuer tues tuet tuor tuos tupe tupo tups tupu turc turd ture turo turp turr turs turt turu tusc tusd tuss tust tute tuto tuts tutt tutu tuuo tuxs txtr u-rp uccp ucdc ucdd uces ucos ucrc ucsc ucsd ucst ucsu ucut udds uder udet udoo udop udos udot udox udpd udsd udts uers uess uext uocc uor- uore upcs updo uped upor upos uppc uppe uppp uppu upsc upse upto upup urde urds urdu ure- ured ures uret urex uro- uroo urox urpo urre urse urso urss ursu urte urts urup urur urus urut uscc usce usco uscs usdc usde usdo usdp usds usdt used usee user uses uset usoc usoe usos uspc uspo uspp usps ussc usse ussr usss usst ussu ustc uste usto ustp usts usus utec utep uter utes utor utpd utsc utto uttu uucp uuoc uuuu uxor uxue uxus x-ed xces xdcc xdos xeer xer- xero xers xert xeus xexe xoco xoro xorp xors xote xout xoxo xpcc xper xpot xpto xrcd xrds xrep xrod xsup xtep xtro xtsr xurs xuxu xxxo xxxx

-tree c-cor c-dot c-p-c c-pop c-tec ccccc cccsd ccett ccups cders cduce ceco- cecos ceddo ceded ceder cedes