a-ak a-be a-ok aaaa aaab aaae aaaf aaar aaba aabb aaea aafa aafb aaff aage aaka aake aaoe aaoo aara aare aaro abaa abab abae abaf abag abak abar abb- abba abbb abbe abbo abbr abee aber abff aboa abob abof abok aboo abor abra abro aeaf aeer aega aeka aer- aera aero afaa afak afao afar afee afek afer affa affo afgf afka afkr afoa afoe afog afoo afor afr- afra afre afro ag-o agag agao agar agba agbo agea agee ager agfa agga agge agob agog agoo agra agre agro akaa akae akao akar akee akeg aker akka akko akok akr- akra akre aoba aora aorb arab arae araf arag arak arar arba arbe area aree aref areg arek areo arfa arfb arff arga argb arge argo arka arke arko aroa arob aroe aroo aror arr- arra arre arrg arrk arro arrr baaa baaf baak baar baba babb babe babo babr baek baer baff bafo baga bage bagg bago bak- baka bake bako bakr bar- bara barb bare barf barg bark baro barr bbbb bbeb bbga bbrg beaf beag beak bear beba bebb bebe bebo beeb beef beeg beek beer befa befe beff befo bega begg bego beka beke beko beo- beof beok beor bera bere berg berk bero berr bfgf boab boag boak boar boba bobb bobe bobo boea boee boef boeo boer bofa bofe boff boga boge bogg bogo boka boke boko boob booe boof boog book boor bor- bora bore borf borg bork boro borr brab brae braf brag brak brao brea breb bree bref breg brek breo brer brka brkb broa brob broe brog brok broo bror brrr eaaf eaba eafb eaga eage eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eefa eefe eega eeka eeke eera eerg eero ef-g efab efbr efeo effa efke efor egaa egae egao egar egba egbe egea egee eger egfr eggb egge eggo ego- egor egra egre eka- ekab ekeb ekek eker ekka ekoa eoka eora eore eraf erba erbb erbe ereb erer erg- erga ergg ergo erke erob eroe eroo erra erre erro f--k faaa faba fabe fabo faeb fafa fafe faff fafg fafo fage fagg fago fake fako fara farb fare farg fark faro farr fbar feaf feak fear feba febo feeb feek feer fefe feff fefo fege fegg feke feko feof fera ferb fere ferk fero ferr ffar ffee ffff ffrr fkab foaf foak foar foba foer fofo foge fogg fogo foke foof fook for- fora forb fore forg fork foro forr frab frae frag frak frea free freo frob froe frog gaar gaba gabb gabe gabo gabr gaea gaer gafa gafb gaff gaga gage gagg gago gara garb gare garf garg garo garr gbag gbbo geab gear geba gebe geek geer gefe gege gegg gego geko geo- geof geog gera gerb gere gero gfer gffa gfoa gfor ggfg gggg goaf goar goba gobe gobo goef goer gofe goff gofr goga gogo goke goof goog gook goor gora gorb gore gorf gorg goro gorr grab grae graf grbr grea greb gree gref greg grfa grob grof grog grok groo gror grrr kaaa kaab kaaf kaag kaak kaar kaba kabb kabe kabf kabg kabo kabr kaeo kaer kafa kafe kaff kafr kag- kaga kagb kage kagg kago kagr kaka kake kakk kako kaoa kaog kaok kaor kara karb kare karf karg kark karo karr kbaa kbab kbae kbak kbar kbba kbbb kbbe kbbf kbbg kbbk kbbo kbbr kbeb kbee kbef kbek kbeo kber kbfb kbff kbfk kbfo kbfr kbga kbgb kbge kbgg kbgo kbgr kbkb kbkf kbkg kbkk kbko kbkr kboa kbob kboe kbok kboo kbra kbrb kbre kbrf kbrg kbrk kbro kea- keag keak kear keba kebb kebe kebr keef keek keer kefa kefb keff kefr kega kege kegg kegk kegr keka kekb keke keko keok ker- kera kerb kere kerf kerk kero kerr kfab kfar kfbk kfeb kfeg kfer kffa kffb kfff kffg kffk kfge kfgo kfgr kfka kfkb kfog kfok kfoo kfor kfra kfre kfrg kfro kfrr kgab kgaf kgak kgba kgbb kgbr kgeb kgeo kgfa kgff kgfk kgga kggf kggg kggo kggr kgoe kgor kgra kgrb kgre kgrg kgrk kgro kgrr kkaa kkag kkar kkba kkbb kkbe kkbg kkbo kkbr kkea kkeg kkfg kkfr kkgb kkgo kkgr kkkk kkoa kkob kkoo kkor kkrb kkre kkrf kkrk kkro kkrr koab koae koak koar koba kobb kobe kobk kobo kobr koea kofa kofe koff kofg kofk kofo koga kogb koge kogg kogo koka kokb koke kokf kokk koko kokr koob koog kook kooo koor kora korb kore korf korg kork koro korr krab krae krag krak krar krba krbb krbe krbg krbk krbr krea kreb kree kref krek kreo krfe krff krfg krfo krka krke krkk krko krkr kroa krob kroe krof krog krok kroo kror krrb krre krrf krrg krrk krro krrr o-eo oaer oafo oake oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obro oegb oera oere ofek ofer off- offa offe offo offr ofgo ofor ofra ofre ogae ogar ogb ogba ogbe ogea ogee oger ogfr ogge ogoa ogog ogra ogre ogro okak oker okgo okka okko okok okor okra okre okro ooaa ooak ooba oobe ooer ooff oooo oora oore orab orae orak orao orar orba orbb orbe orbo ore- orea oreb oreg orek oreo orer orfe orff orga orge orgo orka orke orko oro- oroe orof orok oror orra orro raab raaf raag raak raba rabb rabe rabk rabo raef raeg raer rafa rafe raff raga rage ragg rago raka rake rakk raob raok rara rarb rare rarf rark raro rbaf rbbb rbbr rea- reae reaf reak reao rear reba rebb rebe rebk rebo reeb reef reek refe reff refg refr rega rege rego regr reka reke reko reof reog rera rere rerg rero rfae rfef rgba rgbe rkkf roab roaf roag roak roar rob- roba robb robe robo roea roeg roer rofe roff rofo roga roge rogg rogo roka roke rokk roko rokr roob roof roog rook