a-wa aaaa aaab aaar aaba aabb aabt aabw aaoo aaow aara aaro aart aaru aata aatt aatw aauw aawt aaww abaa abab abar abat abau abaw abb- abba abbb abbo abbr abbt aboa abob aboo abor abot abou abow abra abro abta abtu abua abut abwa abwr abwu aoba aora aorb aort aout arab arar arat arau araw arba aroa arob aroo aror arow arr- arra arro arrr arrt arru arta arto artr arua arub arut arwa at-t ataa atab atar atat atob ator atot atra atro atru atta atto attr attu atua atub atur atwa atwo atwt atwu auaa aur- aura auro aut- auto auwa awar awoo awow awro awwa baaa baar baat baba babb babo babr babu bar- bara barb baro barr bart baru bata bato batt batu bau- baur baw- bawu bbau bbbb bbwr boab boar boat boba bobb bobo bobu bobw boob boor boot boow bor- bora boro borr bort boru borw bota botb boto bott botw boua bour bout bouw bowa bowr bowt brab brao brat brau braw broa brob broo bror brot brou brow brrr brut btaa btob btor btrt bttb btwo buar buat buba bubb bubo bubu bur- bura burb buro burr burt buru but- buta buto butt buwa bwaa oaau oara obba obbo obor obot obra obro ooaa ooba oooo oora oort ootb ootw orab orao orar orat orba orbb orbo orbu oro- oror orot orra orro orta orto orub orwa orwo otar oto- otoo otor otow otra otro otta otto ottu otur otwo ouat our- oura ouro ourt out- outa outb outo ouu- owar owow owt- owtt owur owwa raab raat raba rabb rabo rabu raob rara rarb raro rata rato ratt ratu raua raub raut rawa rawr rawu raww rbbb rbbr roab roar roat rob- roba robb robo robt robu roob roor root rora roro rort roru rota roto rotr rott roua roub rout rowa rowb rowr rowt roww rrat rrrr ruba rubb rubu rura ruro ruru ruta ruto rutt rutu ruwa taa- taar taat taba tabb tabo tabu taoa taor taou tara tarb taro tarr tart taru tata tatb tato tatr tatt tatu taua taub taur taut tawa tawo tawt taww tbar tbrb tbta toab toat toau toaw toba tobo tobt tobu tooa toor toot tora toro torr tort toru tota toto totr tott tour tout towa traa trab trao trat trau traw troa troo trot trou trow trra trtr trub trut truu ttab ttbb tttt tuao tuar tuat tuba tubb tubo tubr tubu tuor tura turb turo turr turt turu tuta tuto tutt tutu tuuo twat twbt two- twoa twob twoo twot uart uaru uata uatu uaua ubar ubba ubbo ubra uor- urao urat urau urba uro- uroa uroo urra urur urut urwa utau utaw utor utto uttu utwo uuta uuuu waaa waao waar waat waaw waba wabb wabo wabr wabt wabw waob waoo waor waow war- wara warb waro warr wart waru warw wata watb wato watr watt watw waub waur waut wawa wawb wawo wawt wbaa wbab wbar wbat wbau wbbb wbbo wbbr wbbt wbbw wbob wbor wbow wbrb wbrr wbrt wbru wbrw wbta wbto wbtr wbtt wbtu wbtw wbut wbuw wbwb wbwo wbwt woaa woab woar woat woba wobb wobo wobt woob woot woow wora worb woro worr wort worw wotb wotr wott wotw woub wour wout wouw wowb wowo wowt woww wraa wrab wrao wrar wrat wrau wraw wrba wrbb wrbo wrbt wrbu wrbw wroa wrob wroo wrot wrow wrra wrrb wrro wrrw wrta wrtb wrto wrtr wrtu wrtw wrua wrub wrwa wrwb wrwr wtab wtar wtaw wtbb wtbo wtbr wtbu wtob wtor wtot wtou wtow wtrb wtro wtrt wtru wtrw wtta wttb wtto wttr wttt wttu wttw wtua wtwa wtwb wtwo wtwr wtwt wtww wuab wuat wuaw wuba wubb wubr wubt wubu wuot wur- wura wurb wurt wutb wutr wutu wuub wuuu wuwa wwab wwba wwbb wwbr wwbt wwbu wwor wwot wwow wwra wwrb wwrr wwru wwrw wwta wwtr wwtw wwwa wwwr wwww