a-ak a-ii aaaa aaab aaad aaaf aaai aaba aabb aabd aabi aada aadi aafa aafb aafd aaff aafi aaib aaii aaka abaa abab abad abaf abai abak abb- abba abbb abbi abda abdi abff abia abib abid adaa adab adad adai adak adba adbi adda addd addi adfa adia adib adif adik adki afaa afad afak afdb affa affi afia afib afid afif afik afka aiai aiba aida aidb aidi aifd aiff aiia aiib aiid aika aiki akaa akai akia akid akif akik akka akki ba-i baaa baad baaf baak baba babb babi bada badb badd badi baff baia baib baid baik bak- baka baki bbad bbbb bbdd bdii biad biaf biak biba bibb bibi bida bidi bifa biff bifi daab daad daba dabb dada dadi dafa daff dafi daia daid daik daka daki dddd dfaf dffa dia- diab diad diaf diak diba dibb dida didi dif- difa diff diii dika diki dkba dkid f--k faaa faad faba fabd fabi fada fadd fadi fafa faff fafi faid faik faki ffff ffii fiaa fiad fiaf fiba fida fidf fifa fiff fifi fiii fika fiki fkab iaaa iaai iaba iadb iaff iaia ibad ibfi ibia ibid idad idda idfa idia idid ifaa ifbb ifda ifid iida iifa iiii ikid ikki k-id kaaa kaab kaaf kaai kaak kaba kabb kabd kabf kabi kad- kada kadd kadf kadi kafa kaff kafi kaia kaib kaid kaif kaii kaik kaka kaki kakk kbaa kbab kbad kbai kbak kbba kbbb kbbd kbbf kbbi kbbk kbdb kbdf kbdi kbfb kbff kbfi kbfk kbia kbib kbid kbif kbik kbkb kbkf kbkk kdaa kdab kdad kdaf kdai kdak kdbb kdbi kddb kddd kddf kddi kddk kdfi kdia kdka kdkb kdkd kdkk kfab kfai kfbk kfda kffa kffb kfff kffk kfia kfka kfkb kiab kiad kiai kiba kibb kibi kida kidb kidd kidi kidk kifa kiff kiia kiid kiii kiik kika kikd kikf kiki kikk kkaa kkai kkba kkbb kkbd kkbi kkda kkdd kkfi kkia kkid kkik kkkk