-ic a-a a-b a-c a-i aaa aab aac aai aak aar aas aau ab- aba abb abc abi abk abr abs abu ac- aca acb acc aci ack acr acs acu ai- aia aib aic aii aik air ais aiu aka akb akc aki akk akr aks aku ar- ara arb arc ari ark arr ars aru as- asa asb asc asi ask asr ass asu au- aua aub auc aui auk aur aus b-u baa bab bac bai bak bar bas bau bba bbb bbc bbi bbk bbr bbs bbu bca bcb bcc bci bck bcr bcs bcu bi- bia bib bic bii bik bir bis biu bka bkb bkc bkk bkr bks bra brb bri brk brr brs bru bsa bsb bsc bsi bsk bsr bss bsu bua bub buc bui buk bur bus buu c-- caa cab cac cai cak car cas cau cba cbb cbc cbi cbk cbr cbs cbu cca ccb ccc cci cck ccr ccs ccu ci- cia cib cic cii cik cir cis ciu cka ckb ckc cki cks cra crb crc cri crk crr crs cru csa csb csc csi csk csr css csu cua cub cuc cui cuk cur cus cuu ia- iaa iab iac iai iar ias iau iba ibb ibc ibi ibk ibr ibs ibu ica icb icc ici ick icr ics icu iia iib iic iii iir iis iiu ika ikb ikc iki ikk ikr iks iku ir- ira irb irc iri irk irr irs iru is- isa isb isc isi isk isr iss isu iu- iua iub iuc iui iur ius ka- kaa kab kac kai kak kar kas kau kba kbb kbc kbi kbk kbr kbs kbu kca kcb kcc kci kck kcr kcs kcu kia kib kic kii kik kir kis kiu kkb kkc kki kkk kkr kks kku kra krc kri krk krr krs kru ksa ksb ksc ksi ksk ksr kss ksu kub kuc kui kuk kur kus kuu ra- raa rab rac rai rak rar ras rau rba rbb rbc rbi rbk rbr rbs rbu rca rcb rcc rci rcr rcs rcu ria rib ric rii rik rir ris rkb rkc rkk rks rku rra rrb rrc rri rrk rrr rrs rru rsa rsb rsc rsi rsk rsr rss rsu rua rub ruc rui ruk rur rus ruu saa sab sac sai sak sar sas sau sba sbb sbc sbi sbk sbr sbs sbu sca scb scc sci sck scr scs scu sia sib sic sii sik sir sis siu sk- ska skb skc ski skk skr sks sku sr- sra srb src sri srk srr srs ss- ssa ssb ssc ssi ssk ssr sss ssu sua sub suc sui suk sur sus suu ua- uaa uab uac uai uak uar uas uau uba ubb ubc ubi ubk ubr ubs ubu uca ucb ucc uci uck ucr ucs ucu uia uib uic uii uir uis uiu uka ukb ukc uki ukk ukr uku ur- ura urb urc uri urk urr urs uru usa usb usc usi usk usr uss usu uua uuc uur uus uuu

a-ak a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aaci aack aacr aacs aacu aaib aaic aaii aais aaka aaku aara aarc aari aars aaru aasa aasc aasi aass aasu aaus abaa abab abac abai abak abar abas abau abb- abba abbb abbi abbr abbs abca abcb abcc abci abcr abcs abia abib abic abir abis abiu abra abrc abri abrs abs- absa absi abss absu abua abuk abus acaa acab acac acai acar acas acba acca accc acci accs accu aci- acia acic acir acis acks acr- acra acrc acri acrr acrs acsa acsc acsi acss acu- acur acus aiai aias aiba aica aicc aicr aics aiia aiib aiic aiir aika aiki aiks aira airi airs aisa aisb aisi aisk aisr aiui akaa akai akar akas akca akia akik akir akis akiu akka akki akku akr- akra aksa aksi aksu akua arab arac arai arak arar aras arau arba arbi arbs arc- arca arci arcs aria arib arii arik aris arka arki arks arr- arra arrc arri arrk arrr arrs arru ars- arsa arsc arsi arsk arsu arua arub arui asaa asab asac asai asak asar asas asau asba asbu asc- asca ascb ascc asci ascr asia asic asii asik asir asis aska aski askr asks asra asrc asrs asru assa assc assi assk assr asss assu asub asui asur asus auaa auca auci auis auki auks aur- aura auri ausa ausu ba-i baaa baak baar baas baba babb babi babr babs babu bac- baca bacc baci back bacs baia baib baic baik bair bais bak- baka baki bakr baks baku bar- bara barb barc bari bark barr bars baru basa basc basi bask bass basu bau- bauk baur bbas bbau bbbb bbbs bbci bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcra bcrs bcru bcsa bcsc bcss bcuc biak biar bias biba bibb bibi bibs bica bicc bici bick bics biis biku bira birb biri birk birr birs biru bis- bisa bisc bisk biss bisu brab brac brai brak bras brau brca brcb bria bric brik bris brka brkb brrr brrs brsb brsr bruc brus bsaa bsac bsas bsci bscs bsic bsra bssc buar buba bubb bubi bubs bubu buca bucc buci buck bucs bucu buic buik buir buis buiu buka buki bukk buku bur- bura burb buri burk burr burs buru busa busc busi busk buss busu buus caaa caab caac caas caba cabi cabs cabu cac- caca cacc caci cack cacr caia caib caic caik cair cais caiu caka cara carb carc cari cark carr cars casa casb casc casi cask casr cass casu cauc cauk caus cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbia cbir cbka cbkr cbsa cbsc cbsi cbus ccaa ccab ccac ccai ccar ccas ccba ccbc ccca cccb cccc ccci cccs cccu ccic ccii ccir ccis ccra ccrc ccri ccrs ccsa ccsi ccss ccuc ccus ciaa ciak