a-fu a-ii a-iv aaaa aaab aaaf aaai aaar aaas aaav aaba aabb aabi aabt aafa aafb aaff aafi aaib aaii aais aara aari aars aart aaru aasa aasf aasi aass aast aasu aata aatf aatt aaus aava abaa abab abaf abai abar abas abat abau abb- abba abbb abbi abbr abbs abbt abff abia abib abir abis abit abiu abra abri abrs abs- absa absf absi abss absu abta abts abtu abua abuf abus abut abva afaa afar afat afbs affa affi affs afft afia afib afif afir afis afit afr- afra afri afrs afru afsa afsb afst afta afts afua afus afvs aiai aias aiba aiff aifs aifv aiia aiib aiir aira airi airs airt aisa aisb aisi aisr aist aita aitf aiti aitr aits aitt aitu aiui aiva arab araf arai arar aras arat arau arba arbi arbs arfa arfb arff arfs arft arfu aria arib arif arii aris arit arr- arra arri arrr arrs arrt arru ars- arsa arsi arst arsu arta arti artr arts artv arua arub arui arut arva arvi asaa asab asaf asai asar asas asat asau asba asbu asfa asfi asia asif asii asir asis asit asra asrs asru assa assi assr asss asst assu asta astb asti astr asts astv asub asui asur asus asva asvs at-t ataa atab atai atar atas atat atbs atfb atfs atia atif atis atit atiu atra atri atru atsb atsi atst atta atti attr atts attu atua atub atur atus atvi atvs auaa aufi aufs auis aur- aura auri ausa aust ausu aut- auts auvs avab avar avas avat avia avis avit aviv avra avri avst avui avur avus avva ba-i baaa baaf baar baas baat baba babb babi babr babs babu baff baft baia baib bair bais bait bar- bara barb barf bari barr bars bart baru basa basf basi bass bast basu bata batf bati bats batt batu bau- bauf baur bava bavi bavu bbas bbau bbbb bbbs bfas bffs bfsi bfsr bfta bfts bftt biaf biar bias biat biba bibb bibi bibs bifa biff bifi biis bira birb biri birr birs birt biru bis- bisa biss bist bisu bita bits bitt bitu bivi brab braf brai bras brat brau brav brfu bria bris brit brrr brrs brsb brsr brst brus brut bruv brvi bsaa bsas bsat bsfa bsff bsfs bsra bsts bstv btaa btaf btrt btss bttb btus btvi buar buat buba bubb bubi bubs bubu buff bufr buif buir buis buit buiu bur- bura burb buri burr burs burt buru busa busi buss bust busu but- buta buti buts butt buus faaa faas faba fabi fabs fabu fafa faff fafi fair fais fait fara farb farr fars fart faru fasa fasi fass fast fata fatf fati fats fatt faur faut fava favi favs fbar fbis fbrs fbus ffar ffff ffii ffrr ffsa ffss fftf ffvs fiaa fiaf fiar fias fiat fiba fibs fifa fiff fifi fift fiii fira firs fisa fisi fiss fist fisu fita fiti fits fitt fiua fivb fr-v frab fras frat frau fria frib fris frit frsb frst frta frub frvt fsai fsas fsfi fsia fsra fssa fssf fsta fstv ftii ftrs ftsa ftsr ftub fuar fuat fubb fubs fubu fuff fufu fuir fuit fur- fura furi furr furs furt fusa fusi fuss fust fusu futa futi futs futu fvsu iaaa iaai iaas iaat iaba iaff iaia iais iara iars iart iaru iasa iasi iasr iata iati iava ibar ibas ibat ibfi ibia ibis ibra ibri ibsa ibsf ibss ibtb ibts ibus ifaa ifar ifas ifat ifbb ifis ifit ifra ifrb ifrf ifri ifsa ifsb ifta ifva iias iifa iiii iiis iiit iira iirs iisi iisr iist iisu iita iitr iitt iraf irai irar iras irfu iri- iria iris irra irri irrs irsa irsf irta irtf irti irts irus irvs is-a isaf isai isar isas isat isba isbt isfa isia isis isit isra isri issa issf issi issr isss issu ista isti istr ists isua isus itaa itaf itai itar itas itat itbs itfa itia itif itis itra itrf itri itrs itsa itsf itsi itsu itta ittf itur iuiu iura iuss iust ivai ivar ivbv ivrs raab raaf raas raat raba rabb rabi rabs rabu rafa raff rafi raft raia raif raii rair rais rait raiu rara rarb rarf rari rars rasa rasi rass rast rasu rata ratf rati rats ratt ratu raua raub rauf raus raut rava ravi rbaf rbbb rbbr rbbs rbis rbss rbst riaa riab riai rias riat riau rib- riba ribs ribu rifa riff rifs rift rifu riia riif riis riri rirs risa risi riss rist risu rita riti rits ritt ritu rius riva rivs rras rrat rrif rrrr rsaa rsaf rsai rsbi rsis rssa rsts rstu rsua rtai rtas rtbf rtfb rtss rtts rtva rtvi ruas ruba rubb rubi rubs rubu rufa ruff ruft ruif ruis ruit rura ruri rurs ruru rusa rusi russ rust rusu ruta ruti ruts rutt rutu ruvi ruvu s-ib s-ii s-iv s-vt saab saaf saar saas saat saba sabb sabi sabr sabs sabu safa safb saff safi safr saft safu saia saif sair sais sait saiv sara sarf sari sarr sars sart saru sarv sasa sasf sasi sass sast sata satb sati satr sats satt satu saua sauf saur saus saut sava savi savs savu sbaa sbai sbar sbas sbbs sbia sbsa sbsi sbst sbus sfar sfas sfba sfia sfra sfss sfsu sfts siaa siab siaf siai sias siat siau siba sibi sibs sibu sifa siff sifr sift sifu siit sira sirf siri sirr sirs sirt siru sisa sisi siss sist sisu sit- sita siti sits sitt situ siui sius siut siva sivi sraf sras srfi srib sris srta srtr srtv srub ssaa ssab ssas ssat ssau ssbr ssis ssit ssra ssri ssrs sssa sssb sssf sssi ssss ssta sstb ssts st-v stab stai star stas stat stau stbs stfu stia stib stif stir stis stit stra stri strs stru stsf stsi stss sttr stub stuf stur stus stut stuv stvs suar suas suat sub- suba subb subi subs