a-ak a-be a-ok aaaa aaab aaae aaar aaba aabb aaea aaka aake aaoe aaoo aara aare aaro abaa abab abae abaj abak abar abb- abba abbb abbe abbo abbr abee aber aboa abob abok aboo abor abra abro aeer aeka aer- aera aero ajab ajak ajao ajar ajba ajee ajka ajob ajoo akaa akae akao akar akee aker akka akko akok akr- akra akre aoba aora aorb arab arae arak arar arba arbe area aree arek areo arja arje arjo arka arke arko aroa arob aroe aroo aror arr- arra arre arrk arro arrr baaa baak baar baba babb babe babo babr baek baer baja bak- baka bake bako bakr bar- bara barb bare bark baro barr bbbb bbeb beak bear beba bebb bebe bebo beeb beej beek beer beja beka beke beko beo- beok beor bera bere berk bero berr bjoa boab boak boar boba bobb bobe bobo boea boee boeo boer bojo boka boke boko boob booe book boor bor- bora bore borj bork boro borr brab brae braj brak brao brea breb bree brek breo brer brje brka brkb broa brob broe brok broo bror brrr eaba eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eeka eeke eera eero ejer ejob ejoo eka- ekab ekeb ekek eker ekka ekoa eoka eora eore erba erbb erbe ereb erer erja erke erob eroe eroo erra erre erro j-ro jaak jaar jaba jabo jabr jaer jaja jaka jake jako jara jare jark jaro jarr jbaa jbar jbob jear jebb jebe jeer jeke jeok jera jere jerk jero jjar joab joao joar joba jobe jobo joea joee jojo joka jokb joke jook joor jora jore jork joro jrbr kaaa kaab kaak kaar kaba kabb kabe kabo kabr kaeo kaer kaja kajb kaje kajk kajo kajr kaka kake kakj kakk kako kaoa kaok kaor kara karb kare karj kark karo karr kbaa kbab kbae kbak kbar kbba kbbb kbbe kbbk kbbo kbbr kbeb kbee kbek kbeo kber kbja kbjk kbkb kbkk kbko kbkr kboa kbob kboe kbok kboo kbra kbrb kbre kbrj kbrk kbro kea- keak kear keba kebb kebe kebr keek keer kejb kejj kejo keka kekb keke keko keoj keok ker- kera kerb kere kerk kero kerr kjaa kjae kjak kjbb kjbr kjee kjer kjjj kjjk kjjo kjjr kjke kjkj kjkk kjoe kjoj kjok kjor kjrb kkaa kkar kkba kkbb kkbe kkbj kkbo kkbr kkea kkjb kkjk kkkj kkkk kkoa kkob kkoj kkoo kkor kkrb kkre kkrk kkro kkrr koab koae koak koar koba kobb kobe kobk kobo kobr koea koja kojb koje kojo koka kokb koke kokk koko kokr koob kook kooo koor kora korb kore kork koro korr krab krae kraj krak krar krba krbb krbe krbk krbr krea kreb kree krej krek kreo krjb krje krjk krjo krka krke krkk krko krkr kroa krob kroe krok kroo kror krrb krre krrk krro krrr o-eo oaer oake oara oare obak obba obbo obea ober obja obkb oboe obok obor obra obre obro oera oere ojak ojea ojok okak okej oker okja okka okko okok okor okra okre okro ooaa ooak ooba oobe ooer oooo oora oore orab orae orak orao orar orba orbb orbe orbo ore- orea oreb orek oreo orer orka orke orko oro- oroe orok oror orra orro raab raaj raak raba rabb rabe rabk rabo raer raja raje rajo raka rake rakk raob raok rara rarb rare rark raro rbbb rbbr rea- reae reak reao rear reba rebb rebe rebk rebo reeb reek reja reka reke reko rera rere rero roab roak roar rob- roba robb robe robo roea roer roja roje rojo roka roke rokk roko rokr roob rook roor rora rore rork roro rrrr