a-ha aaaa aaab aaad aaah aaav aaba aabb aabd aabh aada aagh aaha aava abaa abab abad abag abb- abba abbb abda abgd abha abva abvd adaa adab adad adag adah adba adda addd adha adhd advb agad agag agav agba agda agga agha agva ahab ahad ahah ahha ahva avab avda avva baaa baad baah baba babb bada badb badd badh baga bagg bagh baha bava bbad bbbb bbdd bbga bdav bddh bgdv bhag daab daad daag daba dabb dada daga dagg dagh dagv daha dava dbag dddd dhaa dhad dhag dvda gaba gabb gada gadd gaga gagg gaha gava gbag gddb gggg gghg gvhd gvvv haab haad haag haba hada hadh hag- haga hagg hagh haha hava hbag hdda hgah hhaa hhgg hhhh vaad vada vag- vaga vagg vava vhhh vvvv