a-ii aaaa aaab aaad aaai aaba aabb aabd aabi aada aadi aaib aaii abaa abab abad abai abb- abba abbb abbi abda abdi abia abib abid adaa adab adad adai adba adbi adda addd addi adia adib aiai aiba aida aidb aidi aiia aiib aiid ba-i baaa baad baba babb babi bada badb badd badi baia baib baid bbad bbbb bbdd bdii biad biba bibb bibi bida bidi daab daad daba dabb dada dadi daia daid dddd dia- diab diad diba dibb dida didi diii iaaa iaai iaba iadb iaia ibad ibia ibid idad idda idia idid iida iiii