a-ak aaaa aaab aaam aaba aabb aabm aaka aama aamb abaa abab abag abak abam abb- abba abbb abma abmb agag agam agba agga agma akaa akam akka amaa amag amam amb- amba amga amka amm- amma baaa baak baam baba babb babm baga bagg bak- baka bama bamb bamm bbbb bbga bbgm bbmg bmaa bmag gaba gabb gaga gagg gam- gama gamb gamm gbag gggg kaaa kaab kaag kaak kaam kaba kabb kabg kag- kaga kagb kagg kagm kaka kakk kakm kam- kama kamb kamm kbaa kbab kbak kbam kbba kbbb kbbg kbbk kbbm kbga kbgb kbgg kbgm kbkb kbkg kbkk kbmb kbmg kgab kgak kgam kgba kgbb kgga kggg kggm kgmb kkaa kkag kkam kkba kkbb kkbg kkgb kkgm kkkk kkma kkmg kkmk kmag kmak kmam kmga kmgk kmgm kmkk kmmg kmmk kmmm maaa maag maak maam maba maga magg maka mama mbam mbba mgam mgga mkak mmaa mmab mmmm