aaaa aaab aaar aaba aabb aabt aaoo aara aaro aart aaru aata aatt abaa abab abar abat abau abax abb- abba abbb abbo abbr abbt aboa abob aboo abor abot abou abox abra abro abta abtu abua abut aoba aora aorb aort aout arab arar arat arau arax arba aroa arob aroo aror arr- arra arro arrr arrt arru arta arto artr artx arua arub arut at-t at-x ataa atab atar atat atax atob ator atot atra atro atru atrx atta atto attr attu atua atub atur auaa aur- aura auro aut- auto auxa axar axat axo- axoa axto axxo ba-x baaa baar baat baba babb babo babr babu bar- bara barb baro barr bart baru barx bata bato batt batu bau- baur baux baxt bbau bbbb bbox boab boar boat boba bobb bobo bobu boob boor boot boox bor- bora boro borr bort boru bota botb boto bott boua bour bout boxa brab brao brat brau brax broa brob broo bror brot brou brox brrr brut brux btaa btob btor btrt bttb buar buat buba bubb bubo bubu bur- bura burb buro burr burt buru but- buta buto butt buxa oaau oara obba obbo obor obot obox obra obro ooaa ooba oooo oora oort ootb orab orao orar orat orba orbb orbo orbu oro- oror orot orra orro orta orto orub otar oto- otoo otor otra otro otta otto ottu otur ouat our- oura ouro ourt out- outa outb outo ouu- oxa- oxo- oxox oxxo raab raat raba rabb rabo rabu raob rara rarb raro rata rato ratt ratu raua raub raut raxa rbbb rbbr roab roar roat rob- roba robb robo robt robu roob roor root roox rora roro rort roru rota roto rotr rott roua roub rout roux roxa roxo rrat rrrr ruba rubb rubu rura ruro ruru ruta ruto rutt rutu 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 tax- taxa taxo taxt tbar tbox tbrb tbta toab toat toau toba tobo tobt tobu tooa toor toot tora toro torr tort toru torx tota toto totr tott tour tout tox- toxa toxo toxt traa trab trao trat trau trax troa troo trot trou trox trra trtr trub trut truu trux ttab ttbb tttt tuao tuar tuat tuba tubb tubo tubr tubu tuor tura turb turo turr turt turu tuta tuto tutt tutu tuuo txaa txtr uart uaru uata uatu uaua ubar ubba ubbo ubra uor- urao urat urau urba uro- uroa uroo urox urra urur urut utau utor utto uttu uuta uuuu uxor xaar xara xbar xbox xbra xoro xout xoxo xtar xtra xtro xura xuxa xuxu xxxo xxxx