-ic a-a a-b a-c a-i a-t aaa aab aac aai aar aas aat aau ab- aba abb abc abi abr abs abt abu ac- aca acb acc aci acr acs act acu ai- aia aib aic aii air ais ait aiu ar- ara arb arc ari arr ars art aru as- asa asb asc asi asr ass ast asu at- ata atb atc ati atr ats att atu au- aua aub auc aui aur aus aut b-u baa bab bac bai bar bas bat bau bba bbb bbc bbi bbr bbs bbt bbu bca bcb bcc bci bcr bcs bct bcu bi- bia bib bic bii bir bis bit biu bra brb bri brr brs brt bru bsa bsb bsc bsi bsr bss bst bsu bta btb btc bti btr bts btt btu bua bub buc bui bur bus but buu c-- caa cab cac cai car cas cat cau cba cbb cbc cbi cbr cbs cbt cbu cca ccb ccc cci ccr ccs cct ccu ci- cia cib cic cii cir cis cit ciu cra crb crc cri crr crs crt cru csa csb csc csi csr css cst csu cta ctb ctc cti ctr cts ctt ctu cua cub cuc cui cur cus cut cuu ia- iaa iab iac iai iar ias iat iau iba ibb ibc ibi ibr ibs ibt ibu ica icb icc ici icr ics ict icu iia iib iic iii iir iis iit iiu ir- ira irb irc iri irr irs irt iru is- isa isb isc isi isr iss ist isu ita itb itc iti its itt itu iu- iua iub iuc iui iur ius iut ra- raa rab rac rai rar ras rat rau rba rbb rbc rbi rbr rbs rbt rbu rca rcb rcc rci rcr rcs rct rcu ria rib ric rii rir ris rit rra rrb rrc rri rrr rrs rrt rru rsa rsb rsc rsi rsr rss rst rsu rta rtb rtc rti rtr rts rtt rtu rua rub ruc rui rur rus rut ruu saa sab sac sai sar sas sat sau sba sbb sbc sbi sbr sbs sbt sbu sca scb scc sci scr scs sct scu sia sib sic sii sir sis sit siu sr- sra srb src sri srr srs srt ss- ssa ssb ssc ssi ssr sss sst ssu sta stb stc sti str sts stt stu sua sub suc sui sur sus sut suu taa tab tac tai tar tas tat tau tba tbb tbc tbi tbr tbs tbt tbu tca tcb tcc tci tcr tcs tct tcu tia tib tic tii tir tis tit tiu tra trb trc tri trr trs trt tru tsa tsb tsc tsi tsr tss tst tsu tta ttb ttc tti ttr tts ttt ttu tua tub tuc tui tur tus tut tuu ua- uaa uab uac uai uar uas uat uau uba ubb ubc ubi ubr ubs ubt ubu uca ucb ucc uci ucr ucs uct ucu uia uib uic uii uir uis uit uiu ur- ura urb urc uri urr urs urt uru usa usb usc usi usr uss ust usu uta utb utc uti utr uts utt utu uua uuc uur uus uut uuu

a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aacr aacs aact aacu aaib aaic aaii aais aara aarc aari aars aart aaru aasa aasc aasi aass aast aasu aata aatc aatt aaus abaa abab abac abai abar abas abat abau abb- abba abbb abbi abbr abbs abbt abca abcb abcc abci abcr abcs abct abia abib abic abir abis abit abiu abra abrc abri abrs abs- absa absi abss absu abta abts abtu abua abus abut ac-t acaa acab acac acai acar acas acat acba acca accc acci accs acct accu aci- acia acic acir acis acr- acra acrc acri acrr acrs acsa acsc acsi acss acst acta actc acti acts actt actu acu- acur acus acut aiai aias aiba aica aicc aicr aics aiia aiib aiic aiir aira airi airs airt aisa aisb aisi aisr aist aita aiti aitr aits aitt aitu aiui arab arac arai arar aras arat arau arba arbi arbs arc- arca arci arcs arct aria arib arii aris arit arr- arra arrc arri arrr arrs arrt arru ars- arsa arsc arsi arst arsu arta artc arti artr arts arua arub arui arut asaa asab asac asai asar asas asat asau asba asbu asc- asca ascb ascc asci ascr asct asia asic asii asir asis asit asra asrc asrs asru assa assc assi assr asss asst assu asta astb astc asti astr asts asub asui asur asus at-t ataa atab atac atai atar atas atat atbs atca atcc atcr atcs atia atic atis atit atiu atra atrc atri atru atsb atsc atsi atst atta atti attr atts attu atua atub atuc atur atus auaa auca auci auct auis aur- aura auri ausa aust ausu aut- auts ba-i baaa baar baas baat baba babb babi babr babs babu bac- baca bacc baci bacs bact baia baib baic bair bais bait bar- bara barb barc bari barr bars bart baru basa basc basi bass bast basu bata batc bati bats batt batu bau- baur bbas bbau bbbb bbbs bbci bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bcci bccs bcia bcis bcit bcra bcrs bcru bcsa bcsc bcss bctc bcts bcuc biar bias biat biba bibb bibi bibs bica bicc bici bics biis bira birb biri birr birs birt biru bis- bisa bisc biss bist bisu bita bitc bits bitt bitu brab brac brai bras brat brau brca brcb bria bric bris brit brrr brrs brsb brsr brst brtc bruc brus brut bsaa bsac bsas bsat bsci bscs bsic bsra bssc bsts btaa btcc btcs btrc btrt btss bttb btus buar buat buba bubb bubi bubs bubu buca bucc buci bucs bucu buic buir buis buit buiu bur- bura burb buri burr burs burt buru busa busc busi buss bust busu but- buta buti buts butt buus caaa caab