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a-ak a-be a-ii aaaa aaab aaae aaaf aaai aaar aaba aabb aabi aaea aafa aafb aaff aafi aaib aaii aaka aake aara aare aari abaa abab abae abaf abai abak abar abb- abba abbb abbe abbi abbr abee aber abff abia abib abie abir abra abri aeaf aebi aeer aeka aer- aera aeri afaa afak afar afee afek afer affa affi afia afib afif afik afir afka afkr afr- afra afre afri aiai aiba aiea aiee aiff aiia aiib aiir aika aike aiki aira aire airi akaa akae akai akar akee aker akia akie akif akik akir akka akki akr- akra akre arab arae araf arai arak arar arba arbe arbi area aree aref arei arek arfa arfb arff aria arib arie arif arii arik arka arke arki arr- arra arre arri arrk arrr ba-i baaa baaf baak baar baba babb babe babi babr baek baer baff baia baib baie baik bair bak- baka bake baki bakr bar- bara barb bare barf bari bark barr bbbb bbeb beaf beak bear beba bebb bebe bebi beeb beef beek beer befa befe beff beia beik beir beka beke beki bera bere beri berk berr biaf biak biar biba bibb bibe bibi bieb bief bier bifa biff bifi bike bira birb bire biri birk birr brab brae braf brai brak brea breb bree bref brei brek brer bria brie brik brka brkb brrr eaaf eaba eafb eaif eara earb eare ebba ebbr eber eeea eeee eefa eefe eeka eeke eera efab efbr effa effi efik efke eiei eier eika eike eiki eira eire eka- ekab ekeb ekek eker ekka ekki eraf erba erbb erbe ereb erei erer eria erie erik erke erki erra erre f--k faaa faba fabe fabi faeb fafa fafe faff fafi faie faik fair fake faki fara farb fare fark farr fbar feaf feak fear feba feeb feek feer fefe feff fefi feia feie feir feke fera ferb fere ferk ferr ffar ffee ffff ffii ffrr fiaa fiaf fiar fiba fibe fief fier fifa fife fiff fifi fiii fika fike fiki fira fire firk fkab frab frae frak frea free frei fria frib frie frik i-be iaaa iaai iaba iaea iafe iaff iaia iara iare ibar ibea ibfi ibia ibie ibra ibri ieie iera iere ieri ifaa ifae ifar ifbb ifer ifra ifrb ifrf ifri iifa iiie iiii iira ikar ikea ikee iker ikki ikra ikri irae iraf irai irak irar irbe iree irer irfe iri- iria irie irka irki irra irre irri kaaa kaab kaaf kaai kaak kaar kaba kabb kabe kabf kabi kabr kaei kaer kafa kafe kaff kafi kafr kaia kaib kaie kaif kaii kaik kair kaka kake kaki kakk kara karb kare karf kari kark karr kbaa kbab kbae kbai kbak kbar kbba kbbb kbbe kbbf kbbi kbbk kbbr kbeb kbee kbef kbek kber kbfb kbff kbfi kbfk kbfr kbia kbib kbie kbif kbik kbkb kbkf kbkk kbkr kbra kbrb kbre kbrf kbri kbrk kea- keak kear keba kebb kebe kebi kebr keef keek keer kefa kefb keff kefr keib keif keii keik keir keka kekb keke keki ker- kera kerb kere kerf keri kerk kerr kfab kfai kfar kfbk kfeb kfer kffa kffb kfff kffk kfia kfir kfka kfkb kfra kfre kfri kfrr kiab kiai kiar kiba kibb kibe kibi kibr kief kier kifa kife kiff kifr kiia kiii kiik kika kikf kiki kikk kikr kira kirb kirf kiri kirk kirr kkaa kkai kkar kkba kkbb kkbe kkbi kkbr kkea kkfi kkfr kkia kkik kkkk kkrb kkre kkrf kkrk kkrr krab krae krai krak krar krba krbb krbe krbi krbk krbr krea kreb kree kref krei krek krfe krff kria krib krik krka krke krki krkk krkr krrb krre krrf krri krrk krrr raab raaf raak raba rabb rabe rabi rabk raef raer rafa rafe raff rafi raia raie raif raii raik rair raka rake raki rakk rara rarb rare rarf rari rark rbaf rbbb rbbr rea- reae reaf reak rear reba rebb rebe rebk reeb reef reek