oobi oocr ooia oooo ooos oora oort oosa oosi oost ootb oots oous orab orac orai orao orar oras orat orba orbb orbi orbo orbs orbu orca orci orco orcs ori- oria oric orio oris orit oro- oror oros orot orra orri orro orrs orsa orsi orso orsu orta ortc orto orts orub orus osai osar osas osat osba osca oscc osci osco osia osii osis osoi osoo osor osos osro ossa ossb ossi osso ossu osta ostc osti ostr osts otac otar otas otbs otic otis otit oto- otoo otor otos otra otro otrs otsa otso otsu otta otti otto otts ottu otur otus ouac ouat oubs oucc ouii ouir ouis ouit our- oura ouro ours ourt ousa oust out- outa outb outi outo outs ouu- raab raas raat raba rabb rabi rabo rabs rabu rac- raca racc raci raco racs ract racu raia raic raii rair rais rait raiu raob raoc raos rara rarb rari raro rars rasa rasc rasi raso rass rast rasu rata rati rato rats ratt ratu raua raub rauc raus raut rbbb rbbr rbbs rbis rbss rbst rcac rcas rcbc rcbo rccb rccc rccs rcic rcis rcos rcsa rcsc rcsi rcss rctc rcti rcts riaa riab riai rias riat riau rib- riba ribo ribs ribu rica ricc rico rics rict riia riis rios riot riou riri rirs risa risc risi riso riss rist risu rita riti rito rits ritt ritu rius roab roar roas roat rob- roba robb robi robo robs robt robu roca rocc roco rocs roia roio roir rois roit roiu roob rooi roor roos root rora rorc rori roro rort roru rosa rosc rosi roso ross rost rota rotc roti roto rotr rots rott roua roub rous rout rras rrat rrrr rsaa rsai rsbi rscc rscs rsis rsos rssa rsts rstu rsua rtai rtas rtca rtcc rtss rtts ruas ruba rubb rubi rubs rubu ruca ruci ruct ruis ruit rura rurc ruri ruro rurs ruru rusa rusi ruso russ rust rusu ruta ruti ruto ruts rutt rutu s-ib s-ic s-ii s-os sa-c saab saac saar saas saat saba sabb sabc sabi sabo sabr sabs sabu saca sacc saci saco sacr sacs sact sacu saia saic sair sais sait saoi saor saos saou sara sarc sari saro sarr sars sart saru sasa sasc sasi saso sass sast sata satb satc sati sato satr sats satt satu saua sauc saur saus saut sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbct sbia sbic sbor sbot sbsa sbsi sbst sbtc sbus scaa scab scac scai scar scas scat scba scbi sccc sccs scct sci- scia scic scio scir scis scit scob scoo scor scot scr- scra scrc scri scrs scsa scsc scsi scso scsr scst scsu sctc scto sctr scts scua scub scur scut siaa siab siac siai sias siat siau siba sibc sibi sibo sibs sibu sica sicc sici sico sics sicu siit sior sios siot siou sira sirc siri siro sirr sirs sirt siru sisa sisc sisi siss sist sisu sit- sita sitc siti sito sits sitt situ siui sius siut soar soas soat soba sobo sobr sobs sobt sobu soca soci soco socr socs soia soic soir sois soit soor soos soot sora sorb sori soro sorr sors sort soru sosa sosi soso soss sost sota sotc soto sots sotu sour sous sout sras srbc srcc srct srib sris sros srta srtr srub ssaa ssab ssac ssao ssas ssat ssau ssbr ssca sscc ssci sscs ssis ssit ssoc ssot ssra ssrc ssri ssrs sssa sssb sssc sssi ssss ssta sstb sstc ssts stab stac stai star stas stat stau stbc stbs stca stcc stcs stcu stia stib stic stio stir stis stit stoa stob stoo stor stos stot stou stra strc stri stro strs stru stsi stss sttc sttr stub stuc stur stus stut suar suas suat sub- suba subb subi subo subs suc- succ suci sucr sucs suio suir suis suit suor suos sur- sura surc suri suro surr surs surt suru sus- susa susi suso suss sust susu suta suti suto sutu suus taa- taar taas taat taba tabb tabc tabi tabo tabs tabu taca tacc taci taco tacs tact taia taio tair tais tait taoa taor taos taou tara tarb tarc tari taro tarr tars tart taru tasa tasb tasc tasi tasr tass tast tasu tata tatb tati tato tatr tats tatt tatu taua taub tauc taur taus taut tbar tbas tbbs tbca tbcb tbcc tbit tbrb tbst tbta tcbs tcca tccc tccu tcos tctc tcts tiaa tiab tiao tiar tias tiba tibi tibs tibu tica ticc tico tics tiit tiiu tios tiou tira tirb tiri tiro tirr tirs tiru tisa tisb tisi tiso tiss tist tita titc titi tito tits titt titu toab toas toat toau toba tobi tobo tobs tobt tobu toca toci toco tois toit tooa toor toos toot tora torc tori toro torr tors tort toru tosa tosb tosc tosi toso toss tost tosu tota totc toti toto totr tots tott toui tour tous tout traa trab trac trai trao tras trat trau trca trcc tri- tria trib tric trio tris trit troa troc troi troo tros trot trou trra trsi trst trtc trtr trub truc trus trut truu tsaa tsai tsao tsar tsat tsau tsbc tsca tscc tsia tsis tsob tsoi tsos tsou tssa tssi tssr tsst tstc tsts tsui ttab ttbb ttss tttt tuao tuar tuas tuat tuba tubb tubo tubr tubs tubu tuca tucc tuco tuis tuit tuiu tuor tuos tura turb turc turi turo turr turs turt turu tusa tusc tusi tuss tust tuta tuti tuto tuts tutt tutu tuuo uabc uaca uair uaoc uarc uars uart uaru uasa uata uatu uaua ubac ubar ubba ubbi ubbo ubic ubii ubir ubis ubit uboc ubos ubra ucai ucar ucas ucat ucbc ucca ucci ucio ucos ucrc ucsa ucsb ucsc ucst ucsu ucua ucut uica uira uirr uist uits uocc uor- urac urai urao uras urat urau urba urbi urbs urca urci uria urib uric uris uriu uro- uroa uroo urra