-th a-a a-b a-c a-t aaa aab aac aaf aah aar aat aau ab- aba abb abc abf abh abr abt abu ac- aca acb acc acf ach acr act acu af- afa afb afc aff afh afr aft afu aha ahb ahc ahf ahh ahr aht ahu ar- ara arb arc arf arh arr art aru at- ata atb atc atf ath atr att atu au- aua aub auc auf auh aur aut b-u baa bab bac baf bah bar bat bau bba bbb bbc bbf bbh bbr bbt bbu bca bcb bcc bcf bch bcr bct bcu bfa bfb bfc bff bfh bfr bft bfu bha bhb bhc bhf bhh bhr bht bhu bra brb brf brh brr brt bru bta btb btc btf bth btr btt btu bua bub buc buf buh bur but buu c-- caa cab cac caf cah car cat cau cba cbb cbc cbf cbh cbr cbt cbu cca ccb ccc ccf cch ccr cct ccu cfa cfb cfc cff cfh cfr cft cfu ch- cha chb chc chf chh chr cht chu cra crb crc crf crh crr crt cru cta ctb ctc ctf cth ctr ctt ctu cua cub cuc cuf cuh cur cut cuu faa fab fac faf fah far fat fau fba fbb fbc fbf fbh fbr fbt fbu fca fcb fcc fcf fcr fct fcu ffa ffc fff ffh ffr fft ffu fha fhb fhc fhf fhh fhr fra frb frc frf frh frr frt fru fta ftb ftc ftf fth ftr ftt ftu fua fub fuf fur fut fuu haa hab hac haf hah har hat hau hba hbb hbc hbf hbh hbr hbt hbu hca hcb hcc hcf hch hcr hct hfa hfb hfc hff hfh hfr hft hfu hha hhb hhc hhf hhh hhr hht hhu hr- hra hrb hrc hrf hrh hrr hrt hru hta htb htc htf hth htr htt hua hub huc huf huh hur hut huu ra- raa rab rac raf rah rar rat rau rba rbb rbc rbf rbh rbr rbt rbu rca rcb rcc rcf rch rcr rct rcu rfa rfb rfc rff rfh rfr rft rfu rh- rha rhb rhc rhf rhh rhr rht rhu rra rrb rrc rrf rrh rrr rrt rru rta rtb rtc rtf rtr rtt rtu rua rub ruc ruf ruh rur rut ruu taa tab tac taf tah tar tat tau tba tbb tbc tbf tbh tbr tbt tbu tca tcb tcc tcf tch tcr tct tcu tfa tfb tfc tff tfh tfr tft tfu th- tha thb thc thf thh thr tht thu tra trb trc trf trh trr trt tru tta ttb ttc ttf tth ttr ttt ttu tua tub tuc tuf tuh tur tut tuu ua- uaa uab uac uaf uah uar uat uau uba ubb ubc ubf ubh ubr ubt ubu uca ucb ucc ucf uch ucr uct ucu ufa ufc uff ufh ufr uft ufu uha uhb uhc uhf uhh uhr uht uhu ur- ura urb urc urf urr urt uru uta utb utc utf uth utr utt utu uua uuc uur uut uuu

a-fu a-ha aaaa aaab aaac aaaf aaah aaar aaba aabb aabc aabh aabt aaca aacb aacc aacf aach aacr aact aacu aafa aafb aafc aaff aaha aara aarc aart aaru aata aatc aatf aatt abaa abab abac abaf abar abat abau abb- abba abbb abbr abbt abca abcb abcc abcf abch abcr abct abff abha abhr abra abrc abta abtu abua abuf abut ac-t acaa acab acac acar acat acba acca accc accf acch acct accu acfc acft acha achh achr acht achu acr- acra acrc acrr acta actc actf acth actt actu acu- acuf acur acut afaa afar afat afca afcb afcc afch afcu affa affc afft afr- afra afrc afru afta aftc afua ahab ahac ahah ahar ahat ahau ahfa ahha ahra ahrc ahrr ahta ahua arab arac araf arah arar arat arau arba arbh arc- arca arch arct arfa arfb arfc arff arft arfu arh- arr- arra arrc arrh arrr arrt arru arta artc arth artr arua arub arut at-t ataa atab atac atar atat atca atcc atcf atch atcr atfb atfc atha atra atrc atru atta attr attu atua atub atuc atur auaa auca auch auct aufc auht aur- aura aut- auth baaa baaf baah baar baat baba babb babr babu bac- baca bacc bach bact bafc baff baft baha bahr baht bahu bar- bara barb barc barf barh barr bart baru bata batc batf bath batt batu bau- bauf baur bbau bbbb bbch bbfc bbrc bcaa bcar bcat bcbc bcca bccc bcfc bcra bcru bctc bcuc bfca bfta bftt bhar bhat bhca bhcc bhff bhra bhrt bhur bhut bhuu brab brac braf brah brat brau brca brcb brfc brfu brrr brtc bruc bruh brut btaa btaf btcc btfc btrc btrt bttb buar buat buba bubb bubu buca bucc buch bucu bufc buff bufr buha buhr bur- bura burb burh burr burt buru but- buta butt caaa caab caac caaf caah caat caba cabf cabu cac- caca cacc cach cacr cafa cafb cafc caff cafu caha caht cara carb carc carf carr cart cat- cata catb catc catf cath catt catu cauc cauf caut cbac cbar cbat cbbc cbca cbcc cbcr cbct cbcu cbfb cbfc cbha cbrh cbrt cbta cbtc cbtf ccaa ccab ccac ccaf ccar ccat ccba ccbc ccca cccb cccc cccf cccu ccfa ccfc ccff ccha cchr ccra ccrc ccrf ccrt cctb cctc cctt ccuc ccut cfaa cfab cfac cfar cfbc cfbr cfbt cfca cfcb cfcf cffb cffr cfra cfrb cfrt cfta cftc cfth cftr chaa chab chac chaf chah char chat chau chca chch chfa chfc chfr chha chra chrb chrc chrf chrr chrt chtr chtt chua chub chur chut crab crac craf crar crat crau crbc crbu crca crcc crcr crfc crrt crtc crtf crub crut ctab ctba ctca ctcf ctfc ctrc ctta cuau cub- cuba cubb cuca cucc cufa cufc cuff cura curb curf curr curt cut- cuta cutc cuth cutt faaa faac faah faba