a-ii a-iv aaaa aaab aaad aaai aaav aaba aabb aabd aabi aada aadi aaib aaii aava abaa abab abad abai abb- abba abbb abbi abda abdi abia abib abid abva abvd adaa adab adad adai adba adbi adda addd addi adia adib advb advi aiai aiba aida aidb aidi aiia aiib aiid aiva aivd avab avda avdi avia avid aviv avva ba-i baaa baad baba babb babi bada badb badd badi baia baib baid bava bavi bbad bbbb bbdd bdav bdii biad biba bibb bibi bida bidi bivi daab daad daba dabb dada dadi daia daid dava davi dddd dia- diab diad diba dibb dida didi diii diiv diva divd divi dvda dvi- dvii iaaa iaai iaba iadb iaia iava ibad ibia ibid idad idda idia idid idvd iida iiii ivai ivbv ivda vaad vada vadi vaia vaid vava viad vida vidi viii viva vivi vvvv