a-ii aaaa aaab aaad aaai aaap aaba aabb aabd aabi aabp aabt aada aadi aadt aaib aaii aapa aapi aapt aata aatt abaa abab abad abai abap abat abb- abba abbb abbi abbt abda abdi abia abib abid abit abpa abpd abpi abpp abta adaa adab adad adai adap adat adba adbi adda addd addi adia adib adip adit adp- adta aiai aiba aida aidb aidi aidt aiia aiib aiid aipa aipi aita aiti aitt apai apap apat apba apda apdd api- apia apid apip apit appa appd appt apta apti aptt at-t ataa atab atad atai atap atat atdi atdt atia atid atip atit atta atti attp ba-i baaa baad baat baba babb babi bada badb badd badi baia baib baid bait bapa bapi bapp bapt bata bati batt bbad bbbb bbdd bdii biad biap biat biba bibb bibi bida bidi bipa bipp bita bitd bitt bpai bpda bpti btaa btbp btdt bttb daab daad daap daba dabb dabp dabt dada dadi daia daid dait dapa dapi dapp data dati datp datt dbit dbpd dbtt dddd dia- diab diad diap diat diba dibb dibp dida didi diii dipa dipp dipt dita diti ditt dpaa dpdt dppa dtaa dtap dtdp dttp iaaa iaai iaap iaat iaba iadb iadt iaia iapa iapp iapt iata iati ibad ibat ibia ibid ibtb idad idat idda idia idid idta idtp iida iiii iiit iipa iita iitt ipad ipat ipba ipdi ipid ippa ipta itaa itai itap itat itia itpa itta paap paat paba pabt pada padd padi paia paib paid paip pait papa papb papi papp pata patd pati patt pbpa pdpa piai piat pibb pibi pida piia piip pipa pipi pipp pita piti pitt ppad ppap ppib ppid pppa pppd pppp ppta pptt ptab ptpd taa- taat taba tabb tabi tada taia taip tait tapa tapi tapp tapt tata tatb tati tatt tbit tbta tbtp tdap tddb tiaa tiab tiba tibi tidd tiit tip- tipa tipi tipp tipt tita titi titp titt tpap tpia tppa tppd tppp tptp ttab ttbb tttt