a-a a-b a-c a-t aaa aab aac aan aar aas aat aau ab- aba abb abc abn abr abs abt abu ac- aca acb acc acn acr acs act acu an- ana anb anc ann anr ans ant anu ar- ara arb arc arn arr ars art aru as- asa asb asc asn asr ass ast asu at- ata atb atc atn atr ats att atu au- aua aub auc aun aur aus aut b-u baa bab bac ban bar bas bat bau bba bbb bbc bbn bbr bbs bbt bbu bca bcb bcc bcn bcr bcs bct bcu bna bnb bnc bnn bnr bns bnt bnu bra brb brn brr brs brt bru bsa bsb bsc bsn bsr bss bst bsu bta btb btc btn btr bts btt btu bua bub buc bun bur bus but buu c-- caa cab cac can car cas cat cau cba cbb cbc cbn cbr cbs cbt cbu cca ccb ccc ccn ccr ccs cct ccu cn- cna cnb cnc cnn cnr cns cnt cnu cra crb crc crn crr crs crt cru csa csb csc csn csr css cst csu cta ctb ctc ctn ctr cts ctt ctu cua cub cuc cun cur cus cut cuu naa nab nac nan nar nas nat nau nba nbb nbc nbn nbr nbs nbt nbu nca ncb ncc ncn ncr ncs nct ncu nna nnb nnc nnn nns nnt nnu nra nrb nrc nrn nrr nrs nrt nru nsa nsb nsc nsn nsr nss nst nsu nta ntb ntc ntn ntr nts ntt ntu nua nub nuc nun nur nus nut nuu ra- raa rab rac ran rar ras rat rau rba rbb rbc rbn rbr rbs rbt rbu rca rcb rcc rcn rcr rcs rct rcu rna rnb rnc rnn rnr rns rnt rnu rra rrb rrc rrn rrr rrs rrt rru rsa rsb rsc rsn rsr rss rst rsu rta rtb rtc rtn rtr rts rtt rtu rua rub ruc run rur rus rut ruu saa sab sac san sar sas sat sau sba sbb sbc sbn sbr sbs sbt sbu sca scb scc scn scr scs sct scu sna snb snc snn snr sns snt snu sr- sra srb src srn srr srs srt ss- ssa ssb ssc ssn ssr sss sst ssu sta stb stc stn str sts stt stu sua sub suc sun sur sus sut suu taa tab tac tan tar tas tat tau tba tbb tbc tbn tbr tbs tbt tbu tca tcb tcc tcn tcr tcs tct tcu tna tnb tnc tnn tnr tns tnt tra trb trc trn trr trs trt tru tsa tsb tsc tsn tsr tss tst tsu tta ttb ttc ttn ttr tts ttt ttu tua tub tuc tun tur tus tut tuu ua- uaa uab uac uan uar uas uat uau uba ubb ubc ubn ubr ubs ubt ubu uca ucb ucc ucn ucr ucs uct ucu un- una unb unc unn unr uns unt unu ur- ura urb urc urn urr urs urt uru usa usb usc usn usr uss ust usu uta utb utc utn utr uts utt utu uua uuc uun uur uus uut uuu

-ana a-un aaaa aaab aaac aaan aaar aaas aaba aabb aabc aabt aaca aacb aacc aacn aacr aacs aact aacu aana aara aarc aars aart aaru aasa aasc aass aast aasu aata aatc aatt aaus abaa abab abac aban abar abas abat abau abb- abba abbb abbr abbs abbt abca abcb abcc abcn abcr abcs abct abnu abra abrc abrs abs- absa abss absu abta abts abtu abua abun abus abut ac-t acaa acab acac acan acar acas acat acba acca accc accs acct accu acr- acra acrc acrr acrs acsa acsc acss acst acta actc acts actt actu acu- acur acus acut ana- anaa anab anac anan anar anas anat anau anba anbb anbu anca ancc anct anna annb anns annt anrc ansa ansu ant- anta antr ants antt antu anua anub anun anus anut arab arac aran arar aras arat arau arba arbs arc- arca arcs arct arna arns arnt arr- arra arrc arrr arrs arrt arru ars- arsa arsc arst arsu arta artc artr arts arua arub arun arut asaa asab asac asan asar asas asat asau asba asbu asc- asca ascb ascc ascr asct asnc asra asrc asrs asru assa assc assn assr asss asst assu asta astb astc astr asts asub asun asur asus at-t ataa atab atac atan atar atas atat atbs atca atcc atcr atcs atna atns atra atrc atrn atru atsb atsc atst atta attn attr atts attu atua atub atuc atun atur atus auaa auca auct auna aunt aur- aura ausa aust ausu aut- auts baaa baan baar baas baat baba babb babr babs babu bac- baca bacc bacn bacs bact bana banc bann banr bans bant banu bar- bara barb barc barn barr bars bart baru basa basc bass bast basu bata batc batn bats batt batu bau- baur bbas bbau bbbb bbbs bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bcnu bcra bcrs bcru bcsa bcsc bcsn bcss bctc bcts bcuc bnas bnrr bnss bnta brab brac bran bras brat brau brca brcb brna brns brrr brrs brsb brsr brst brtc bruc brun brus brut bsaa bsac bsas bsat bscs bsns bsra bssc bsts btaa btan btcc btcs btrc btrt btss bttb btus buar buat buba bubb bubs bubu buca bucc bucs bucu buna bunb bunn buns bunt bunu bur- bura burb burn burr burs burt buru busa busc buss bust busu but- buta buts butt buus caaa caab caac caan caas caat caba cabs cabu cac- caca cacc cacr cana canc cann cans cant cara carb carc carn carr cars cart casa casb casc casr cass cast casu cat- cata catb catc cats catt catu cauc caus caut cbac cbar cbat cbbc cbbs cbca cbcc cbcn cbcr cbcs cbct cbcu cbna cbrn cbrt cbsa cbsc cbsn cbta cbtc cbus ccaa ccab ccac ccar ccas ccat ccba ccbc ccbn ccca cccb