a-ak aaaa aaab aaam aaba aabb aabm aaka aama aamb abaa abab abak abam abb- abba abbb abma abmb akaa akam akka amaa amam amb- amba amka amm- amma baaa baak baam baba babb babm bak- baka bama bamb bamm bbbb bmaa kaaa kaab kaak kaam kaba kabb kaka kakk kakm kam- kama kamm kbaa kbab kbak kbam kbba kbbb kbbk kbbm kbkb kbkk kbmb kkaa kkam kkba kkbb kkkk kkma kkmk kmak kmam kmkk kmmk kmmm maaa maak maam maba maka mama mbam mbba mkak mmaa mmab mmmm