a-ii a-iv aaaa aaab aaad aaai aaav aaba aabb aabd aabi aabt aada aadi aadt aaib aaii aata aatt aava abaa abab abad abai abat abb- abba abbb abbi abbt abda abdi abia abib abid abit abta abva abvd adaa adab adad adai adat adba adbi adda addd addi adia adib adit adta advb advi advt aiai aiba aida aidb aidi aidt aiia aiib aiid aita aiti aitt aiva aivd at-t ataa atab atad atai atat atdi atdt atia atid atit atta atti atvi avab avat avda avdi avia avid avit aviv avva ba-i baaa baad baat baba babb babi bada badb badd badi baia baib baid bait bata bati batt bava bavi bbad bbbb bbdd bdav bdii biad biat biba bibb bibi bida bidi bita bitd bitt bivi btaa btdt bttb btvi d-tv daab daad daba dabb dabt dada dadi daia daid dait data dati datt dava davi dbit dbtt dddd ddtv dia- diab diad diat diba dibb dida didi diii diiv dita diti ditt ditv diva divd divi dtaa dvda dvi- dvii iaaa iaai iaat iaba iadb iadt iaia iata iati iava ibad ibat ibia ibid ibtb idad idat idda idia idid idta idtv idvd iida iiii iiit iita iitt itaa itai itat itia itta ivai ivbv ivda taa- taat taba tabb tabi tada taia tait tata tatb tati tatt tatv tava tavi tbit tbta tbvi tddb tdtv tiaa tiab tiba tibi tidd tiit tita titi titt tiva tivi ttab ttbb tttt tvad tvtv vaad vaat vada vadi vaia vaid vait vata vati vatt vava viad vida vidi viii vita viti vitt viva vivi vt-i vvvv