a-ha a-ii aaaa aaab aaac aaah aaai aaba aabb aabc aabh aabi aabt aaca aacb aacc aach aaci aact aaha aaib aaic aaii aata aatc aatt abaa abab abac abai abat abb- abba abbb abbi abbt abca abcb abcc abch abci abct abha abhi abia abib abic abit abta ac-t acaa acab acac acai acat acba acca accc acch acci acct acha achh achi acht aci- acia acic acta actc acth acti actt ahab ahac ahah ahai ahat ahha ahit ahta ahti aiai aiba aica aicc aich aiha aiia aiib aiic aita aith aiti aitt at-t ataa atab atac atai atat atca atcc atch atha athi atia atic atit atta atti ba-i baaa baah baat baba babb babi bac- baca bacc bach baci bact baha bahi baht baia baib baic bait bata batc bath bati batt bbbb bbch bbci bcaa bcat bcbc bcca bccc bcci bcia bcit bctc bhai bhat bhca bhcc bhit biat biba bibb bibi bica bicc bich bici biha bihi bita bitc bith bitt btaa btcc bttb caaa caab caac caah caat caba cabi cac- caca cacc cach caci caha caht caia caib caic cait cat- cata catb catc cath cati catt cbac cbat cbbc cbca cbcc cbct cbha cbia cbit cbta cbtc ccaa ccab ccac ccai ccat ccba ccbc ccca cccb cccc ccci ccha ccic ccii cctb cctc cctt chaa chab chac chah chai chat chca chch chci chha chia chib chic chih chit chtt ciaa ciat ciba cibc cibi cica cicc cich cici cict ciht ciia ciii ciit cita citb cith citi citt ctab ctba ctbi ctca ctia ctic ctta h-ii haab haat haba habi habt haha haht hait hata hatb hath hati hatt hbic hbit hcat hcbc hcca hccb hccc hcch hchi hhaa hhat hhhh hi-c hiaa hiab hiba hibi hibt hicc hich hihc hihi hiht hiit hita hitc hiti hitt htab htcc iaaa iaac iaai iaat iaba iaca iacc iact iahc iaia iata iatc iati ibac ibat ibca ibia ibtb ibtc icaa icab icac icai icat icbc icca iccb iccc icci icct ichc ichi icta ihab ihba ihcc ihit ihtc iiac iica iiht iiii iiit iita iitt itaa itac itai itat itch itha ithc itia itic itta taa- taat taba tabb tabc tabi taca tacc tach taci tact taha tahi taia tait tata tatb tath tati tatt tbca tbcb tbcc tbit tbta tcca tccc tch- tcha tchh tchi tctc thaa thai that thca thch thi- thia thic thtb tiaa tiab tiba tibi tica ticc tich tiht tiit tita titc tith titi titt ttab ttbb tttt