a-a a-b a-c a-t aaa aab aac aae aaf aas aat aau ab- aba abb abc abe abf abs abt abu ac- aca acb acc ace acf acs act acu aea aeb aec aee aef aes aet aeu af- afa afb afc afe aff afs aft afu as- asa asb asc ase asf ass ast asu at- ata atb atc ate atf ats att atu au- aua aub auc aue auf aus aut b-u baa bab bac bae baf bas bat bau bba bbb bbc bbe bbf bbs bbt bbu bca bcb bcc bce bcf bcs bct bcu be- bea beb bec bee bef bes bet beu bfa bfb bfc bfe bff bfs bft bfu bsa bsb bsc bse bsf bss bst bsu bta btb btc bte btf bts btt btu bua bub buc bue buf bus but buu c-- caa cab cac cae caf cas cat cau cba cbb cbc cbe cbf cbs cbt cbu cca ccb ccc cce ccf ccs cct ccu ce- cea ceb cec cee cef ces cet ceu cfa cfb cfc cfe cff cfs cft cfu csa csb csc cse csf css cst csu cta ctb ctc cte ctf cts ctt ctu cua cub cuc cue cuf cus cut cuu eaa eab eac eae eaf eas eat eau eba ebb ebc ebe ebf ebs ebt ebu ec- eca ecb ecc ece ecf ecs ect ecu eea eeb eec eee eef ees eet ef- efa efb efc efe eff efs eft es- esa esb esc ese esf ess est esu eta etb etc ete etf ets ett etu eu- eua eub euc eue euf eus eut faa fab fac fae faf fas fat fau fba fbb fbc fbe fbf fbs fbt fbu fca fcb fcc fce fcf fcs fct fcu fea feb fec fee fef fes fet feu ffa ffc ffe fff ffs fft ffu fsa fsb fsc fse fsf fss fst fsu fta ftb ftc fte ftf fts ftt ftu fua fub fue fuf fus fut fuu saa sab sac sae saf sas sat sau sba sbb sbc sbe sbf sbs sbt sbu sca scb scc sce scf scs sct scu se- sea seb sec see sef ses set seu sfa sfb sfc sfe sff sfs sft sfu ss- ssa ssb ssc sse ssf sss sst ssu sta stb stc ste stf sts stt stu sua sub suc sue suf sus sut suu taa tab tac tae taf tas tat tau tba tbb tbc tbe tbf tbs tbt tbu tca tcb tcc tce tcf tcs tct tcu te- tea teb tec tee tef tes tet teu tfa tfb tfc tfe tff tfs tft tfu tsa tsb tsc tse tsf tss tst tsu tta ttb ttc tte ttf tts ttt ttu tua tub tuc tue tuf tus tut tuu ua- uaa uab uac uae uaf uas uat uau uba ubb ubc ube ubf ubs ubt ubu uca ucb ucc uce ucf ucs uct ucu uea ueb uec uee uef ues uet ufa ufc ufe uff ufs uft ufu usa usb usc use usf uss ust usu uta utb utc ute utf uts utt utu uua uuc uue uus uut uuu

-ase a-be a-fu aaaa aaab aaac aaae aaaf aaas aaba aabb aabc aabt aaca aacb aacc aace aacf aacs aact aacu aaea aaec aaes aafa aafb aafc aaff aasa aasc aase aasf aass aast aasu aata aatc aatf aatt aaus abaa abab abac abae abaf abas abat abau abb- abba abbb abbe abbs abbt abca abcb abcc abcf abcs abct abec abee abes abet abff abs- absa abse absf abss absu abta abts abtu abua abue abuf abus abut ac-t acaa acab acac acae acas acat acba acca accc acce accf accs acct accu ace- acea acec aces acet acfc acfe acfs acft acsa acsc acse acss acst acta actc acte actf acts actt actu acu- acue acuf acus acut aeac aeaf aeas aebs aecb aect aesc aess aest aeta aetc aetf aett afaa afat afbs afca afcb afcc afcs afcu afee afes afet affa affc affs afft afsa afsb afsc afst afta aftc afte afts afua afue afus asaa asab asac asae asaf asas asat asau asba asbu asc- asca ascb ascc asce asct asea asec asee ases aset asfa assa assc asse asss asst assu asta astb astc aste asts asub asue asus at-t ataa atab atac atae atas atat atbs atca atcc atcf atcs atea atec atee atef ates atfb atfc atfe atfs atsb atsc atse atst atta atte atts attu atua atub atuc atus auaa aube auca auce auct aufc aufe aufs ausa ause aust ausu aut- aute auts baaa baaf baas baat baba babb babe babs babu bac- baca bacc bace bacs bact baes bafc baff baft basa basc base basf bass bast basu bata batc bate batf bats batt batu bau- bauf bbas bbau bbbb bbbs bbeb bbet bbfc bcaa bcas bcat bcbc bcbs bcca bccc bccs bcec bces bcet bcfc bcsa bcsc bcss bctc bcts bcuc beaf beas beat beau beba bebb bebe beca becs becu beeb beef bees beet befa befe beff beft bes- besa bese bess best beta betc bete bets bett betu bfas bfca bfcs bffs bfta bfts bftt bsaa bsac bsas bsat bscs bsea bseb bsec bsee bses bset bsfa bsfc bsff bsfs bssc bsse bsts btaa btaf btcc btcs btec btfc btss bttb btus buat buba bubb bube bubs bubu buca bucc buce bucs bucu buea bueu bufc bufe buff busa busc buse buss bust busu but- buta bute buts butt buus caaa caab caac caaf caas caat caba cabe cabf cabs cabu cac- caca cacc cace caec caes caeu cafa cafb cafc cafe caff cafs cafu casa casb casc case cass cast casu cat- cata catb catc cate catf cats catt catu cauc cauf caus caut cbac cbat cbbc cbbs cbca cbcc cbce cbcs cbct cbcu cbea cbec cbee cbef cbet cbfb cbfc cbsa cbsc cbse cbta cbtc cbtf cbus ccaa ccab ccac ccaf ccas ccat ccba ccbc ccca cccb cccc cccf cccs