-th a-a a-b a-c a-t aaa aab aac aah aar aas aat aau ab- aba abb abc abh abr abs abt abu ac- aca acb acc ach acr acs act acu aha ahb ahc ahh ahr ahs aht ahu ar- ara arb arc arh arr ars art aru as- asa asb asc ash asr ass ast asu at- ata atb atc ath atr ats att atu au- aua aub auc auh aur aus aut b-u baa bab bac bah bar bas bat bau bba bbb bbc bbh bbr bbs bbt bbu bca bcb bcc bch bcr bcs bct bcu bha bhb bhc bhh bhr bhs bht bhu bra brb brh brr brs brt bru bsa bsb bsc bsh bsr bss bst bsu bta btb btc bth btr bts btt btu bua bub buc buh bur bus but buu c-- caa cab cac cah car cas cat cau cba cbb cbc cbh cbr cbs cbt cbu cca ccb ccc cch ccr ccs cct ccu ch- cha chb chc chh chr chs cht chu cra crb crc crh crr crs crt cru csa csb csc csh csr css cst csu cta ctb ctc cth ctr cts ctt ctu cua cub cuc cuh cur cus cut cuu haa hab hac hah har has hat hau hba hbb hbc hbh hbr hbs hbt hbu hca hcb hcc hch hcr hcs hct hha hhb hhc hhh hhr hhs hht hhu hr- hra hrb hrc hrh hrr hrs hrt hru hsa hsb hsc hsh hsr hss hst hsu hta htb htc hth htr hts htt hua hub huc huh hur hus hut huu ra- raa rab rac rah rar ras rat rau rba rbb rbc rbh rbr rbs rbt rbu rca rcb rcc rch rcr rcs rct rcu rh- rha rhb rhc rhh rhr rhs rht rhu rra rrb rrc rrh rrr rrs rrt rru rsa rsb rsc rsh rsr rss rst rsu rta rtb rtc rtr rts rtt rtu rua rub ruc ruh rur rus rut ruu saa sab sac sah sar sas sat sau sba sbb sbc sbh sbr sbs sbt sbu sca scb scc sch scr scs sct scu sh- sha shb shc shh shr shs sht shu sr- sra srb src srh srr srs srt ss- ssa ssb ssc ssh ssr sss sst ssu sta stb stc sth str sts stt stu sua sub suc suh sur sus sut suu taa tab tac tah tar tas tat tau tba tbb tbc tbh tbr tbs tbt tbu tca tcb tcc tch tcr tcs tct tcu th- tha thb thc thh thr ths tht thu tra trb trc trh trr trs trt tru tsa tsb tsc tsh tsr tss tst tsu tta ttb ttc tth ttr tts ttt ttu tua tub tuc tuh tur tus tut tuu ua- uaa uab uac uah uar uas uat uau uba ubb ubc ubh ubr ubs ubt ubu uca ucb ucc uch ucr ucs uct ucu uha uhb uhc uhh uhr uhs uht uhu ur- ura urb urc urr urs urt uru usa usb usc ush usr uss ust usu uta utb utc uth utr uts utt utu uua uuc uur uus uut uuu

a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aacr aacs aact aacu aaha aahs aara aarc aars aart aaru aasa aasc aass aast aasu aata aatc aatt aaus abaa abab abac abar abas abat abau abb- abba abbb abbr abbs abbt abca abcb abcc abch abcr abcs abct abha abhr abhs abra abrc abrs abs- absa abss absu abta abts abtu abua abus abut ac-t acaa acab acac acar acas acat acba acca accc acch accs acct accu acha achh achr achs acht achu acr- acra acrc acrr acrs acsa acsc acss acst acta actc acth acts actt actu acu- acur acus acut ahab ahac ahah ahar ahas ahat ahau ahha ahhs ahra ahrc ahrr ahrs ahsa ahss ahta ahts ahua ahus arab arac arah arar aras arat arau arba arbh arbs arc- arca arch arcs arct arh- arhs arr- arra arrc arrh arrr arrs arrt arru ars- arsa arsc arst arsu arta artc arth artr arts arua arub arut asaa asab asac asah asar asas asat asau asba asbu asc- asca ascb ascc asch ascr asct asha ashs asht ashu asra asrc asrs asru assa assc assh assr asss asst assu asta astb astc astr asts asub asur asus at-t ataa atab atac atar atas atat atbs atca atcc atch atcr atcs atha aths atra atrc atru atsb atsc atst atta attr atts attu atua atub atuc atur atus auaa auca auch auct auht aur- aura ausa aush aust ausu aut- auth auts baaa baah baar baas baat baba babb babr babs babu bac- baca bacc bach bacs bact baha bahr bahs baht bahu bar- bara barb barc barh barr bars bart baru basa basc bash bass bast basu bata batc bath bats batt batu bau- baur bbas bbau bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bchs bcra bcrs bcru bcsa bcsc bcss bctc bcts bcuc bhar bhat bhca bhcc bhhs bhra bhrt bhur bhut bhuu brab brac brah bras brat brau brca brcb brhs brrr brrs brsb brsr brst brtc bruc bruh brus brut bsaa bsac bsas bsat bscs bshs bsra bssc bsts btaa btcc btcs bths btrc btrt btss bttb btus buar buat buba bubb bubs bubu buca bucc buch bucs bucu buha buhr buhs bur- bura burb burh burr burs burt buru busa busc bush buss bust busu but- buta buts butt buus caaa caab caac caah caas caat caba cabs cabu cac- caca cacc cach cacr caha cahs caht cara carb carc carr cars cart casa casb casc cash casr cass cast casu cat- cata catb catc cath cats catt catu cauc caus caut cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbcu cbha cbhs cbrh cbrt cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccar ccas ccat ccba ccbc ccca cccb