orbu ore- oreb oreo orer ores orex oro- oroe oror oros orot orpe orps orro orrs orse orso orsu orte orto orts orub orup orus osbe osbp osee oser oses oset osoo osor osos osro ossb osse osso ossu oste ostr osts otbs otee otep oter otes oto- otoe otoo otor otos otpp otre otro otrs otse otso otsu otte otto otts ottu otur otus oubs ouer oupe our- oure ouro ours ourt ouse oust out- outb oute outo outs ouu- oxep oxer oxes oxo- oxos oxox oxus oxxo pbrs pbsp peep peer pees peet peor peou pepe pepo peps per- pere pero perp perr pers pert peru pese peso pess pest pesu pete peto petr pets pett peur peut pobo pobs poer poes poet poop poor poos poot pop- pope popo popp pops popt porb pore poro porr pors port posb pose poso poss post pote poto pots pott potu poup pour pous pout pper ppos pppo pppp ppps ppru ppss ppts pptt ppur prbs pre- preb pree prep pres pret preu prex pro- prob proe proo prop pros prot prou prox prps prrs prse prso prss prtp prtr prue prus prut pruu psbr psbt pseb psos psou pspp pspr psps psrp psse psso psst psts pstu pter ptop ptox pu-e pube pubs pubu pueo puer puet pueu pupe pups pupu pur- purb pure puro purp purr purs puru puss pust put- pute puto puts putt putu puxe pxes rbbb rbbr rbbs rbsp rbss rbst rebb rebe rebo rebs rebu reeb reep rees reet reop reos reot reou repe repo repp repr reps rept repu rere rero rers rert reru rese reso resp ress rest rete reto retr rets rett reue reup reus reut reuu reux rexx rob- robb robe robo robs robt robu roer roes roet roob roop roor roos root roox rope ropo rops rore roro rort roru rose roso rosp ross rost rote roto rotr rots rott roub roue roup rous rout roux roxo rpet rpob rpoe rpos rpps rpts rrrr rrsp rsee rsos rspb rspo rsps rsre rstp rsts rstu rtee rtes rtex rtps rtss rttp rtts rubb rube rubp rubs rubu ruer rues ruet rupe rupp rupt rure ruro rurp rurs ruru ruse ruso russ rust rusu rute ruto ruts rutt rutu rxes s-os sbbs sber sbor sbot sbse sbsp sbst sbus se-e se-o se-s se-t se-u se-x sebe sebo sebs sebt seeb seep seer sees seet seeu seex seop sepe sepo sepp sepr seps sept sepu sepx serb sere sero serp serr sers sert seru sese seso sess sest set- sete seto sets sett setx seur seux sex- sexe sexp sext sobe sobo sobp sobr sobs sobt sobu soeo soep soes soop soor soos soot sope sopo sopp sops sopu sorb sore soro sorr sors sort soru sose soso soss sost sote soto sotp sots sotu soue soup sour sous sout soxs speb spee sper spes spet spex spoo spop spor spos spot spox spps spro sprs spse spso spsp spss spst sptb spto sptr spts spue spur spus sput sreb sreo sres sros srps srpt srpx srsp srtp srtr srub ssbr ssee ssep sses sset ssex ssop ssot sspe sspo ssps sspt sspx ssrs sssb ssss sstb sstp ssts stbs stee steo step ster stes stet stex stob stoe stoo stop stor stos stot stou stox stpp stps stre stro strs stru stss sttr stub stue stup stur stus stut stux sub- subb subo subs suee suer sues suet sueu suor suos sup- supe supo supp supr sups supt sur- sure suro surp surr surs surt suru sus- suse suso susp suss sust susu sute suto sutu suus sux- suxe suxt tbbs tbox tbrb tbsp tbst tbtp tebo tebu teer tees teet teor teos tepe tepp tepu ter- tere tero terp terr ters teru tese teso tesp tess test tete teto tetr tets tett tetu tetx teut text tobe tobo tobs tobt tobu toee toer toes toet toor toos toot top- tope topo topp tops topt topu tore toro torp torr tors tort toru torx tosb tose toso toss tost tosu tosx tote toto totr tots tott toup tour tous tout tox- toxo toxs toxt tper tppp tppr tprs tpte tptp tptr tput tre- tree treo tres tret treu trex troe troo trop tros trot trou trox trpe trpp trps trst trte trtr trub true trus trut truu trux tses tset tsob tsop tsos tsou tspo tsps tspt tsse tssr tsst tsts tsup ttbb tteo tter ttoe ttop ttss tttt tubb tube tubo tubr tubs tubu tuer tues tuet tuor tuos tupe tupo tups tupu turb ture turo turp turr turs turt turu tuss tust tute tuto tuts tutt tutu tuuo tuxs txtr u-rp ubbe ubbo uber ubet ubos uers uess uext uor- uore upbe upor upos uppe uppp uppu upse upto upup urbe urbs ure- ures uret urex uro- uroo urox urpo urre urse urso urss ursu urte urts urup urur urus urut usbe usbr usbs usee user uses uset usoe usos uspo uspp usps ussb usse ussr usss usst ussu ustb uste usto ustp usts usus utep uter utes utor utto uttu uuuu uxor uxue uxus xbee xbox xeer xer- xero xers xert xeus xexe xoro xorp xors xote xout xoxo xper xpot xpto xrep xsup xtbs xtep xtro xtsr xurs xuxu xxxo xxxx

-tree bbbee bbser bbuss be-er be-ro beber bebes bebop bebot bebox beebe beebs beeps beers beest beete beets beeut beost beote beour bepop beppe beppo beppu berbe beres beret berob beroe beror berre berru berse berte berto berts berus besee beset besob besos besot besse besso beste bests besut betee beter betes betoo betor betou betre betrs betso bett- bette betto betts betus beuer beure beust beute bo-bo bobet bobos bobr bobre bobst bobts bobup boeps boero boers boese boets boeur boobs booer boops boore boors boort booru boose boost boots bootx bopet borbo boree borer bores boret borex boro- boroo boros borot borou borox borre borro borse borst borsu borts borup borus borut boset bosor