a-fu aaaa aaab aaaf aaal aaar aaba aabb aabl aabt aafa aafb aaff aafl aala aall aalo aalu aaoo aara aaro aart aaru aata aatf aatt abaa abab abaf abal abar abat abau abb- abba abbb abbo abbr abbt abff abla ablo aboa abob abof abol aboo abor abot abou abra abro abta abtu abua abuf abul abut afaa afao afar afat affa affo afft afla afoa afol afoo afor afr- afra afro afru afta afua alaa alal alao alar alat alau alb- alba albo albu alfa all- alla alll allo allr allu aloa alof alol aloo alor alot alou alro alta alto alua aluf alur alut aoba aola aora aorb aort aotf aouf aoul aout arab araf aral arar arat arau arba arfa arfb arff arft arfu arla arlo aroa arob aroo aror arr- arra arro arrr arrt arru arta arto artr arua arub arul arut at-l at-t ataa atab atal atar atat atfb atla atlo atob atof atol ator atot atra atro atru atta atto attr attu atua atub atul atur auaa aul- aula aulf aull aulo ault aulu auol aur- aura auro aut- auto baaa baaf baal baar baat baba babb babo babr babu baff bafo baft bala balf ball balo balt balu baol bar- bara barb barf baro barr bart baru bata batf bato batt batu bau- bauf baul baur bbau bbbb bblb bffl bfta bftt blaa blab blat blau blbt blob bloo blot blou blub bluf blur blut boab boal boar boat boba bobb bobo bobu bofa boff bofu bola boll bolo bolt bolu boob boof bool boor boot bor- bora borf boro borr bort boru bota botb boto bott boua bouf boul bour bout brab braf brao brat brau brfu broa brob brol broo bror brot brou brrr brut btaa btaf btla btob btor btrt bttb bual buar buat buba bubb bubo bubu buff bufo bufr bula bulb bull bult bulu buol bur- bura burb burl buro burr burt buru but- buta buto butt faaa faba fabo fabu fafa faff fafo fala fall falo falt falu fara farb farl faro farr fart faru fata fatf fato fatt faul faur faut fbar fbla ffar ffff ffrr fftf flab flao flat flob floo flor flot flou flub fluf fluo flur foaf foal foar foba fobt fofo fola foll folo folr folt foof fool foot for- fora forb forl foro forr fort fota foto fott foua foul four fout frab frat frau frla frob frol frot frou frta frub ft-l ftlb ftub fuar fuat fubb fubu fuff fufu fula full fulu fuor fur- fura furl furo furr furt futa futo futu laaa laal laar laat laba labo labr labu lafb laff laft lala lall lalo lalu laou lara larb larf larr lart laru lata lato latt latu laub lauf laul laur laut lbar lblr lbrt lfat llao llat llll lloa lloo loaf loar loat lob- loba lobb lobo lofa loff loft lola loll lolo loob loof lool loor loot lora loro lota lotl loto lotr lott loul lour lout louu lral lrat lrba lrrr lrta ltbf ltbl ltra lttr luau luba luff luft lufu lula lull lulu lura lurt luta luua oaau oafo oall oara obal obba obbo obla oblu obol obor obot obra obro off- offa offo offr offu ofla ofor ofra ofta olaf olar olat olba olbo olfa olla ollo olof olor olot olta oltu olur ooaa ooba ooff oola oolo oooo oora oort ootb orab oral orao orar orat orba orbb orbo orbu orff orfu orla orlo orlu oro- orof oror orot orra orro orta orto orub otar oto- otof otoo otor otra otro otta otto ottu otur ouat ouff oula oulu our- oura ouro ourt out- outa outb outo ouu- raab raaf raat raba rabb rabl rabo rabu rafa raff raft rala ralb ralf rall ralo ralt raob raol rara rarb rarf raro rata ratf rato ratt ratu raua raub rauf raul raut rbaf rbbb rbbr rffl rlab rlua roab roaf roar roat rob- roba robb robo robt robu roff rofl rofo rola rolf roll rolo rolt roob roof rool roor root rora roro rort roru rota rotl roto rotr rott roua roub rouf roul rout rrat rrrr rtbf rtfb rtlt ruba rubb rubu rufa ruff rufo ruft rula rull rulo rura ruro ruru ruta rutl ruto rutt rutu taa- taaf taal taar taat taba tabb tabl tabo tabu tafa taff tafo taft tala tall talo talu taoa taor taou tara tarb tarf taro tarr tart taru tata tatb tato tatr tatt tatu taua taub taul taur taut tbaf tbar tbrb tbta tfal tfot toab toal toat toau toba tobo tobt tobu tofa toff tofo toft tofu tol- tola toll tolo tolt tolu tooa toof tool toor toot tora torf toro torr tort toru tota toto totr tott toul tour tout traa trab traf tral trao trat trau trfr troa troo trot trou trra trtr trub trut truu ttab ttbb ttfa ttff tttt ttul tual tuao tuar tuat tuba tubb tubo tubr tubu tufa tuff tufo tuft tufu tula tull tulo tulu tuor tura turb turf turo turr turt turu tuta tutl tuto tutt tutu tuuo uafa uart uaru uata uatu uaua ubal ubar ubba ubbo ubla ublo ubra ubtf uffa ufra ulaa ular ulft ulla ullo ullr ulo- ulta ulto ultt ulua ulul uofa uofl uofo uor- ural urao urat urau urba urfa urff urft urla uro- uroa urol uroo urra urur urut utal utau utfo utor utto uttu uulu uuta uutf uuuu