a-ak a-ha aaaa aaab aaah aaba aabb aabh aagh aaha aahk aaka abaa abab abag abak abb- abba abbb abha agag agba agga agha ahab ahah ahha akaa akah akha akka baaa baah baak baba babb baga bagg bagh baha bak- baka bakh bbbb bbga bhag gaba gabb gaga gagg gaha gbag gggg gghg haab haag haak haba hag- haga hagg hagh haha haka hakk hbag hgah hhaa hhgg hhhh kaaa kaab kaag kaak kaba kabb kabg kag- kaga kagb kagg kagh kaha kaka kakh kakk kbaa kbab kbak kbba kbbb kbbg kbbk kbga kbgb kbgg kbgh kbhb kbhh kbkb kbkg kbkk kgab kgak kgba kgbb kgga kggg khab khak khgg khhg khhk khka khkk kkaa kkag kkba kkbb kkbg kkgb kkha kkhb kkhh kkhk kkkk