a-ak a-be a-do a-ok aaaa aaab aaad aaae aaaf aaar aaba aabb aabd aada aade aaea aafa aafb aafd aaff aaka aake aaoe aaoo aara aard aare aaro abaa abab abad abae abaf abak abar abb- abba abbb abbe abbo abbr abda abdo abed abee aber abff aboa abob abod abof abok aboo abor abra abro adaa adab adad adae adak adao adar adba adda addd adde addo addr adea adeb adee adeo ader adfa adob adod adoe adok adoo ador adra adre adro aeaf aede aeer aeka aer- aera aerd aero afaa afad afak afao afar afdb afee afek afer affa affo afka afkr afoa afoe afoo afor afr- afra afre afro akaa akae akao akar aked akee aker akka akko akok akr- akra akre aoba aora aorb arab arad arae araf arak arar arba arbe arda arde ardf ardo area ared aree aref arek areo arfa arfb arff arka arke arko aroa arob arod aroe aroo aror arr- arra arre arrk arro arrr baaa baad baaf baak baar baba babb babe babo babr bada badb badd bade bado badr baed baek baer baff bafo bak- baka bake bako bakr bar- bara barb bard bare barf bark baro barr bbad bbbb bbdd bbdo bbeb bd-r bead beaf beak bear beba bebb bebe bebo beda bede bedo beeb beed beef beek beer befa befe beff befo beka beke beko beo- beod beof beok beor bera berd bere berk bero berr boab boad boak boar boba bobb bobe bobo boda bodb bode bodo boea boee boef boeo boer bofa bofd bofe boff boka boke boko boob bood booe boof book boor bor- bora bord bore borf bork boro borr brab brad brae braf brak brao brda brdo brea breb bred bree bref brek breo brer brka brkb broa brob brod broe brok broo bror brrr d-bo daab daad daae daar daba dabb dabo dada dade dado daeb daer dafa dafe daff dafo daka dake dako dara darb dard dare darf dark daro darr dbar dbfo dddd ddre dead deae deaf deak dear deba debe deda dedd dede dedo deeb deed deef deek deer defe deff defo dek- deka deke deor der- dera derb dere derf derk dero derr dfaf dfer dffa dfoe dfrf dkba doab doae doak doar doba dobb dobe dod- doda dodd dode dodo doea doek doer doff doka doke doko doob dood doof dook door dora dord dore dorf dork doro dorr draa drab drad draf drak drar drba drda drea dred dree dref drek drob drod drof drra eaaf eaba eada eadb eadd eafb eara earb eard eare earo ebba ebbo ebbr ebed eber eboe eboo ebor ebro edad edar edda edde eddo ede- edea eder edfa edod edra eede eeea eeee eefa eefe eeka eeke eera eero efab efbr efda efeo effa efke efor eka- ekab ekeb eked ekek eker ekka ekoa eode eoka eora eore erad eraf erba erbb erbe erda erde erdf ereb ered erer erke erob erod eroe eroo erra erre erro f--k faaa faad faba fabd fabe fabo fada fadd fade fado faeb fafa fafe faff fafo fake fako fara farb fard fare fark faro farr fbar fdoa fead feaf feak fear feba febo feda fede feeb feed feek feer fefe feff fefo feke feko feod feof fera ferb ferd fere ferk fero ferr ffar ffee ffff ffrr fkab foad foaf foak foar foba foda fode foed foer fofo foke food foof fook for- fora forb ford fore fork foro forr frab frad frae frak frea fred free freo frob froe kaaa kaab kaaf kaak kaar kaba kabb kabd kabe kabf kabo kabr kad- kada kadd kade kadf kado kadr kaeo kaer kafa kafe kaff kafr kaka kake kakk kako kaoa kaok kaor kara karb kard kare karf kark karo karr kbaa kbab kbad kbae kbak kbar kbba kbbb kbbd kbbe kbbf kbbk kbbo kbbr kbdb kbde kbdf kbdo kbdr kbeb kbed kbee kbef kbek kbeo kber kbfb kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kboa kbob kbod kboe kbok kboo kbra kbrb kbrd kbre kbrf kbrk kbro kdaa kdab kdad kdae kdaf kdak kdao kdar kdbb kdbr kddb kddd kddf kddk kddr kdeb kdef kdfo kdfr kdka kdkb kdkd kdkk kdko kdkr kdoe kdok kdrb kdrf kdro kea- kead keak kear keba kebb kebe kebr keda kedb kedd kede kedo kedr keed keef keek keer kefa kefb keff kefr keka kekb keke keko keok ker- kera kerb kere kerf kerk kero kerr kfab kfar kfbk kfda kfeb kfed kfer kffa kffb kfff kffk kfka kfkb kfok kfoo kfor kfra kfrd kfre kfro kfrr kkaa kkar kkba kkbb kkbd kkbe kkbo kkbr kkda kkdd kkdo kkea kked kkfr kkkk kkoa kkob kkoo kkor kkrb kkre kkrf kkrk kkro kkrr koab koae koak koar koba kobb kobe kobk kobo kobr koda kode kodk kodo koea koed kofa kofe koff kofk kofo koka kokb koke kokf kokk koko kokr koob kook kooo koor kora korb kord kore korf kork koro korr krab krad krae krak krar krba krbb krbd krbe krbk krbr krda krdd krde krdo krdr krea kreb kred kree kref krek kreo krfd krfe krff krfo krka krkd krke krkk krko krkr kroa krob krod kroe krof krok kroo kror krrb krre krrf krrk krro krrr o-eo oade oaer oafo oake oara oare obad obak obba obbo obea obed ober obkb oboe obok obor obra obre obro odbo odda oddd odea oded odeo oder odoo odor odra oedo oera oere ofdr ofek ofer off- offa offe offo offr ofor ofra ofre okak oked oker okka okko okok okor okra okre okro ooaa ooak ooba oobe ooda ooer ooff oooo oora oord oore orab orad orae orak orao orar orba orbb orbe orbo orda orde ordo ore- orea oreb ored orek oreo orer orfe orff orka orke orko oro- oroe orof orok oror orra orro raab raad raaf raak raba rabb rabe rabk rabo rada radd rade rado radr raed raef raer rafa rafe raff raka rake rakk raob raok rara