-ana a-ii aaaa aaab aaac aaai aaan aaba aabb aabc aabi aabt aaca aacb aacc aaci aacn aact aaib aaic aaii aain aana aani aata aatc aatt abaa abab abac abai aban abat abb- abba abbb abbi abbt abca abcb abcc abci abcn abct abia abib abic abin abit abta ac-t acaa acab acac acai acan acat acba acca accc acci acct aci- acia acic acin acta actc acti actt aiai aian aiba aibn aica aicc aiia aiib aiic aiin aina ainc aini aint aita aiti aitt ana- anaa anab anac anai anan anat anba anbb anbi anca ancc anct ania anib anic anin anit anna annb anni annt ant- anta anti antt at-t ataa atab atac atai atan atat atca atcc atia atic atin atit atna atta atti attn ba-i baaa baan baat baba babb babi bac- baca bacc baci bacn bact baia baib baic bain bait bana banc bani bann bant bata batc bati batn batt bbbb bbci bbin bcaa bcat bcbc bcca bccc bcci bcia bcit bctc bian biat biba bibb bibi bica bicc bici biin bin- bina binc bini binn bint bita bitc bitt bnai bnib bnin bnta btaa btan btcc bttb caaa caab caac caan caat caba cabi cac- caca cacc caci caia caib caic cain cait cana canc cani cann cant cat- cata catb catc cati catt cbac cbat cbbc cbca cbcc cbcn cbct cbia cbit cbna cbta cbtc ccaa ccab ccac ccai ccat ccba ccbc ccbn ccca cccb cccc ccci ccic ccii ccna ccnb ccnc ccni cctb cctc cctt ciaa cian ciat ciba cibc cibi cica cicc cici cict ciia ciii ciit cin- cina cinc cini cint cita citb citi citt cnaa cnac cnbc cnci cnib cnic cnna cnta cntc ctab ctan ctba ctbi ctca ctia ctic ctta cttn iaaa iaac iaai iaat iaba iaca iacc iact iaia iain iana iata iatc iati ibac iban ibat ibca ibia ibtb ibtc icaa icab icac icai ican icat icbc icca iccb iccc icci iccn icct icnb icnc icta iiac iica iiii iiit iita iitt inab inac inai inan inat inba inca incb inci inia init inna inni inta inti intn itaa itac itai itan itat itia itic itin itta n-ii naaa naab naac naai naan naat naba nabc nabi naca nacc naci naia naib naic nain nait nan- nana nanb nani nann nant nata natc nati natt nbaa nbbc nbca nbcc nbci nbia nbic nbti ncaa ncac ncat ncba ncbc ncbi ncca nccc ncci nccn ncct ncia ncit ncna ncnc ncta nctc niab niac nian nibi nica nicc nici niia niit nina nini nita nitb nitc niti nnit nnnn nntn ntbc ntcc ntia taa- taan taat taba tabb tabc tabi taca tacc taci tact taia tain tait tana tani tann tant tata tatb tati tatt tbca tbcb tbcc tbit tbta tcca tccc tcnn tctc tiaa tiab tian tiba tibi tica ticc tiit tina tinc tini tinn tint tita titc titi titt tnbc tnca tncc ttab ttbb ttcn tttt