a-ii aaaa aaab aaad aaaf aaai aaba aabb aabd aabi aada aadi aafa aafb aafd aaff aafi aaib aaii abaa abab abad abaf abai abb- abba abbb abbi abda abdi abff abia abib abid adaa adab adad adai adba adbi adda addd addi adfa adia adib adif afaa afad afdb affa affi afia afib afid afif aiai aiba aida aidb aidi aifd aiff aiia aiib aiid ba-i baaa baad baaf baba babb babi bada badb badd badi baff baia baib baid bbad bbbb bbdd bdii biad biaf biba bibb bibi bida bidi bifa biff bifi daab daad daba dabb dada dadi dafa daff dafi daia daid dddd dfaf dffa dia- diab diad diaf diba dibb dida didi dif- difa diff diii faaa faad faba fabd fabi fada fadd fadi fafa faff fafi faid ffff ffii fiaa fiad fiaf fiba fida fidf fifa fiff fifi fiii iaaa iaai iaba iadb iaff iaia ibad ibfi ibia ibid idad idda idfa idia idid ifaa ifbb ifda ifid iida iifa iiii