a-be a-do a-fu aaaa aaab aaad aaae aaaf aaar aaba aabb aabd aabt aada aade aadt aadu aaea aafa aafb aafd aaff aaoe aaoo aara aard aare aaro aart aaru aata aatf aatt abaa abab abad abae abaf abar abat abau abb- abba abbb abbe abbo abbr abbt abda abdo abdu abed abee aber abet abff aboa abob abod abof aboo abor abot abou abra abro abta abtu abua abud abue abuf abut adaa adab adad adae adao adar adat adba adda addd adde addo addr addu adea adeb adee adeo ader adet adfa adob adod adoe adoo ador adot adra adre adro adta adua adub adue adur aeaf aede aedt aeer aer- aera aerd aero aeta aetf aeto aetr aett afaa afad afao afar afat afdb afee afer afet affa affo afft afoa afoe afoo afor afr- afra afre afro afru afta afte afua afud afue aoba aoeu aora aorb aort aotd aotf aouf aout arab arad arae araf arar arat arau arba arbe arda arde ardf ardo ardu area ared aree aref areo aret areu arfa arfb arff arft arfu aroa arob arod aroe aroo aror arr- arra arre arro arrr arrt arru arta arte arto artr arua arub arud arue arut at-t ataa atab atad atae atar atat atdt atea ated atee atef ateo ater atfb atfe atob atod atoe atof ator atot atra atre atro atru atta atte atto attr attu atua atub atur auaa aube aude audo auer aufe aur- aura aurd aure auro aut- aute auto baaa baad baaf baar baat baba babb babe babo babr babu bada badb badd bade bado badr badu baed baer baff bafo baft bar- bara barb bard bare barf baro barr bart baru bata bate batf bato batt batu bau- baud bauf baur bbad bbau bbbb bbdd bbdo bbeb bbet bd-r bduf bead beaf bear beat beau beba bebb bebe bebo beda bede bedo bedu beeb beed beef beer beet befa befe beff befo beft beo- beod beof beor beot bera berd bere bero berr bert beru beta bete beto bett betu beur bfta bftt boab boad boar boat boba bobb bobe bobo bobu boda bodb bode bodo bodu boea boee boef boeo boer boet bofa bofd bofe boff bofu boob bood booe boof boor boot bor- bora bord bore borf boro borr bort boru bota botb botd bote boto bott boua boud boue bouf bour bout brab brad brae braf brao brat brau brda brdo brdt brea breb bred bree bref breo brer bret brfu broa brob brod broe broo bror brot brou brrr brud brue brut btaa btaf btdt btob btor btrt bttb buad buar buat buba bubb bube bubo bubu buda budb budd bude budo budu buea buer bueu bufe buff bufo bufr bur- bura burb burd bure buro burr burt buru but- buta bute buto butt d-bo daab daad daae daar daau daba dabb dabo dabt dabu dada dade dado dadu daeb daer daeu dafa dafe daff dafo daft daou dara darb dard dare darf daro darr dart daru data date dato datr datt datu daub daud daue daur daut dbar dbfo dbtt dddd ddot ddre ddub dead deae deaf dear deau deba debe debt debu deda dedd dede dedo dedu deeb deed deef deer deet defe deff defo deft deor der- dera derb dere derf dero derr deta dete deto detr deua deue deur deut dfaf dfdt dfer dffa dfoe dfrf dftr doab doae doar doat doba dobb dobe dobu dod- doda dodd dode dodo doea doer doff doob dood doof door doot dora dord dore dorf doro dorr dort doru dota dotd dote doto dott doub doud doue douf dour dout draa drab drad draf drar drat drau drba drda drea dred dree dref dret drob drod drof drot drou drra drua drub drue drut druu dtaa dted dtor dtot duaa duab duad duar duat dub- duba dubb dube dubu duda dudd dude dudo dudu duer duet duff dufu duo- dura dure duro durt duru duta dute duur duut eaaf eaba eada eadb eadd eafb eara earb eard eare earo eart eata eate ebba ebbo ebbr ebed eber eboe eboo ebor ebro ebru ebur edad edar edda edde eddo ede- edea eder edfa edfu edod edou edra edru edta edur eede eedu eeea eeee eefa eefe eera eero eeta eete eetu efab efbr efda efeo efet effa efor eft- efta eftu efua eode eora eore eota eotd eoto erad eraf erat erau erba erbb erbe erda erde erdf ereb ered erer eret erft erob erod eroe eroo erra erre erro erta ertu erua erub erur etat etbr etee eter etfa etfb etfe etoe etra etre etro etta ette etto ettu etua euba eude euer eur- eura eure euro eurt faaa faad faba fabd fabe fabo fabu fada fadd fade fado faeb fafa fafe faff fafo fara farb fard fare faro farr fart faru fata fate fatf fato fatt faud faue faur faut fbar fdoa fdot fead feaf fear feat feba febo feda fede feeb feed feer feet fefe feff fefo feod feof fera ferb ferd fere fero ferr fert feru feta fete fetr fett fetu feud ffar ffee ffff ffrr fftf foad foaf foar foba fobt foda fode foed foer fofo food foof foot for- fora forb ford fore foro forr fort fota fote foto fott foua foud four fout frab frad frae frat frau frea fred free freo fret frob froe frot frou frta frub frue ftea fter ftub fuad fuar fuat fubb fubu fuda fudd fude fuet fuff fufu fuor fur- fura fure furo furr furt futa fute futo futu o-eo oaau oade oaer oafo oara oare oate obad obba obbo obdt obea obed ober obet oboe obor obot obra obre obro obtd odbo odda oddd odea oded odeo oder odet odoo odor odot odou odra odtu odur oedo oera oere oeta oeuf ofdr ofer off- offa offe offo offr offu ofor ofra ofre ofta ooaa ooba oobe ooda ooer ooff oooo oora oord oore oort ootb orab orad orae