a-be a-do a-fu aaaa aaab aaad aaae aaaf aaap aaar aaba aabb aabd aabp aabt aada aade aadt aadu aaea aaep aafa aafb aafd aaff aaoe aaoo aapa aapo aapt aara aard aare aaro aarp aart aaru aata aatf aatt aaup abaa abab abad abae abaf abap 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 abpa abpd abpp abpr abra abro abta abtu abua abud abue abuf abut adaa adab adad adae adao adap adar adat adba adda addd adde addo addr addu adea adeb adee adeo ader adet adfa adob adod adoe adoo ador adot adp- adra adre adro adta adua adub adue adur aeaf aeap aede aedt aeer aer- aera aerd aero aeta aetf aeto aetr aett afaa afad afao afap afar afat afdb afee afer afet affa affo afft afoa afoe afoo afor afpa afpe afr- afra afre afro afru afta afte aftp afua afud afue aoba aoeu aopo aora aorb aort aotd aotf aouf aout apao apap apar apat apba apbr apda apdd apdu apea aped apep aper apet apeu apfa apfo apft apo- apod apoe apof apoo apop apor apot apou appa appd appr appt appu apra apre apro aprt apta apte aptt apua apud apup arab arad arae araf arap arar arat arau arba arbe arda arde ardf ardo ardu area ared aree aref areo arep aret areu arfa arfb arff arft arfu aroa arob arod aroe aroo aror arpa arpe arpu arr- arra arre arro arrr arrt arru arta arte arto artr arua arub arud arue arup arut at-t ataa atab atad atae atap atar atat atdt atea ated atee atef ateo atep ater atfb atfe atob atod atoe atof atop ator atot atpr atra atre atro atrp atru atta atte atto attp 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 bapa bape bapp bapt bapu 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 bbpr bd-r bduf bead beaf beap bear beat beau beba bebb bebe bebo beda bede bedo bedu beeb beed beef beep beer beet befa befe beff befo beft beo- beod beof beor beot bepo bera berd bere bero berr bert beru beta bete beto bett betu beur bfpo bfpp bfta bftt boab boad boar boat boba bobb bobe bobo bobu boda bodb bode bodo bodu boea boee boef boeo boep boer boet bofa bofd bofe boff bofu boob bood booe boof boop boor boot bopa bope bopp bor- bora bord bore borf boro borr bort boru bota botb botd bote boto bott boua boud boue bouf boup bour bout bpda bpea bpoe bpot bprd bptf brab brad brae braf brao brat brau brda brdo brdt brea breb bred bree bref breo brep brer bret brfu broa brob brod broe broo bror brot brou brrr brud brue brup brut btaa btaf btbp 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 bupa bur- bura burb burd bure buro burp burr burt buru but- buta bute buto butt d-bo daab daad daae daap daar daau daba dabb dabo dabp dabt dabu dada dade dado dadu daeb daer daeu dafa dafe daff dafo daft daou dapa dape dapp dapu dara darb dard dare darf daro darp darr dart daru data date dato datp datr datt datu daub daud daue daur daut dbar dbfo dbpd dbpf dbtt dddd ddot ddpo ddre ddub dead deae deaf deap dear deau deba debe debt debu deda dedd dede dedo dedu deeb deed deef deep deer deet defe deff defo deft deop deor depa depe depo depp depr dept der- dera derb dere derf dero derp derr deta dete deto detr deua deue deur deut dfaf dfdt dfer dffa dfoe dfrf dftr doab doae doap doar doat doba dobb dobe dobu dod- doda dodd dode dodo doea doer doff doob dood doof doop door doot dopa dope dopo dopp dopr dopt dora dord dore dorf doro dorp dorr dort doru dota dotd dote doto dott doub doud doue douf doup dour dout dpaa dpdt dper dppa draa drab drad draf drap drar drat drau drba drda drea dred dree dref dret drob drod drof drop drot drou drra drua drub drue drup drut druu dtaa dtap dtdp dted dtor dtot dttp duaa duab duad duar duat dub- duba dubb dube dubu duda dudd dude dudo dudu duer duet duff dufu duo- dupa dupe dupo dura dure duro durt duru duta dute dutp duur duut eaaf eaba eada eadb eadd eadp eafb eaop eapp eara earb eard eare earo earp eart eata eate ebba ebbo ebbr ebed eber eboe eboo ebor ebpo ebro ebru ebur edad edar edda edde eddo eddp ede- edea eder edfa edfu edod edou edra edru edta edup edur eede eedu eeea eeee eefa eefe eera eero eeta eete eetu efab efbr efda efeo efet effa efor efpa eft- efta eftp eftu efua eode eora eore eota eotd eoto epaa epad epee eper epfa epod epor epot eppa eppo eppp epra eprb epro eprp epta epte epub erad eraf erap erat erau erba erbb erbe erda erde erdf ereb ered erer eret erft erob erod eroe eroo erpa erpe erra erre erro erta ertu erua erub erur etap 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 faap faba fabd fabe fabo fabu fada fadd fade fado faeb fafa fafe faff fafo fapa fape fapp fara farb fard fare faro farp farr fart faru fata fate fatf fato fatt