a-ak a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aaea aaib aaii aaka aake aara aare aari abaa abab abae abai abak abar abb- abba abbb abbe abbi abbr abee aber abia abib abie abir abra abri aebi aeer aeka aer- aera aeri aiai aiba aiea aiee aiia aiib aiir aika aike aiki aira aire airi akaa akae akai akar akee aker akia akie akik akir akka akki akr- akra akre arab arae arai arak arar arba arbe arbi area aree arei arek aria arib arie arii arik arka arke arki arr- arra arre arri arrk arrr ba-i baaa baak baar baba babb babe babi babr baek baer baia baib baie baik bair bak- baka bake baki bakr bar- bara barb bare bari bark barr bbbb bbeb beak bear beba bebb bebe bebi beeb beek beer beia beik beir beka beke beki bera bere beri berk berr biak biar biba bibb bibe bibi bieb bier bike bira birb bire biri birk birr brab brae brai brak brea breb bree brei brek brer bria brie brik brka brkb brrr eaba eara earb eare ebba ebbr eber eeea eeee eeka eeke eera eiei eier eika eike eiki eira eire eka- ekab ekeb ekek eker ekka ekki erba erbb erbe ereb erei erer eria erie erik erke erki erra erre i-be iaaa iaai iaba iaea iaia iara iare ibar ibea ibia ibie ibra ibri ieie iera iere ieri iiie iiii iira ikar ikea ikee iker ikki ikra ikri irae irai irak irar irbe iree irer iri- iria irie irka irki irra irre irri kaaa kaab kaai kaak kaar kaba kabb kabe kabi kabr kaei kaer kaia kaib kaie kaii kaik kair kaka kake kaki kakk kara karb kare kari kark karr kbaa kbab kbae kbai kbak kbar kbba kbbb kbbe kbbi kbbk kbbr kbeb kbee kbek kber kbia kbib kbie kbik kbkb kbkk kbkr kbra kbrb kbre kbri kbrk kea- keak kear keba kebb kebe kebi kebr keek keer keib keii keik keir keka kekb keke keki ker- kera kerb kere keri kerk kerr kiab kiai kiar kiba kibb kibe kibi kibr kier kiia kiii kiik kika kiki kikk kikr kira kirb kiri kirk kirr kkaa kkai kkar kkba kkbb kkbe kkbi kkbr kkea kkia kkik kkkk kkrb kkre kkrk kkrr krab krae krai krak krar krba krbb krbe krbi krbk krbr krea kreb kree krei krek kria krib krik krka krke krki krkk krkr krrb krre krri krrk krrr raab raak raba rabb rabe rabi rabk raer raia raie raii raik rair raka rake raki rakk rara rarb rare rari rark rbbb rbbr rea- reae reak rear reba rebb rebe rebk reeb reek reia reii reik reir reka reke reki rera rere reri riaa riab riai riak rib- riba ribe riek rier riia rika rike riki rikk rire riri rrrr