a-ak a-be aaaa aaab aaae aaam aaba aabb aabm aaea aaem aaka aake aama aamb aame abaa abab abae abak abam abb- abba abbb abbe abee abma abmb aeka akaa akae akam akee akka amaa amae amam amb- amba ambe amee amka amm- amma amme baaa baak baam baba babb babe babm baek bak- baka bake bama bamb bame bamm bbbb bbeb beak beam beba bebb bebe beeb beek beem beka beke bema beme bmaa eaba eama eame ebam ebba eeea eeee eeka eeke eka- ekab ekam ekeb ekek ekka ekma emae emam emba embe emek emma emme kaaa kaab kaak kaam kaba kabb kabe kaka kake kakk kakm kam- kama kamb kame kamm kbaa kbab kbae kbak kbam kbba kbbb kbbe kbbk kbbm kbeb kbee kbek kbkb kbkk kbmb kbme kea- keak keam keba kebb kebe keek keem keka kekb keke kema kemb keme kemm kkaa kkam kkba kkbb kkbe kkea kkkk kkma kkmk kmae kmak kmam kmea kmem kmke kmkk kmme kmmk kmmm maaa maak maam maba mabe maee maem maka make mama mame mbam mbba meak mebe meek meem meka meke mema meme mkak mmaa mmab mmea mmmm