a-a a-b a-c aaa aab aac aah aak aar aas aau ab- aba abb abc abh abk abr abs abu ac- aca acb acc ach ack acr acs acu aha ahb ahc ahh ahk ahr ahs ahu aka akb akc akh akk akr aks aku ar- ara arb arc arh ark arr ars aru as- asa asb asc ash ask asr ass asu au- aua aub auc auh auk aur aus b-u baa bab bac bah bak bar bas bau bba bbb bbc bbh bbk bbr bbs bbu bca bcb bcc bch bck bcr bcs bcu bha bhb bhc bhh bhk bhr bhs bhu bka bkb bkc bkk bkr bks bra brb brh brk brr brs bru bsa bsb bsc bsh bsk bsr bss bsu bua bub buc buh buk bur bus buu c-- caa cab cac cah cak car cas cau cba cbb cbc cbh cbk cbr cbs cbu cca ccb ccc cch cck ccr ccs ccu ch- cha chb chc chh chk chr chs chu cka ckb ckc ckh cks cra crb crc crh crk crr crs cru csa csb csc csh csk csr css csu cua cub cuc cuh cuk cur cus cuu haa hab hac hah hak har has hau hba hbb hbc hbh hbk hbr hbs hbu hca hcb hcc hch hck hcr hcs hha hhb hhc hhh hhk hhr hhs hhu hka hkb hkh hkk hkr hks hku hr- hra hrb hrc hrh hrk hrr hrs hru hsa hsb hsc hsh hsk hsr hss hsu hua hub huc huh huk hur hus huu ka- kaa kab kac kah kak kar kas kau kba kbb kbc kbh kbk kbr kbs kbu kca kcb kcc kch kck kcr kcs kcu kha khh khk khr khs khu kkb kkc kkh kkk kkr kks kku kra krc krk krr krs kru ksa ksb ksc ksh ksk ksr kss ksu kub kuc kuh kuk kur kus kuu ra- raa rab rac rah rak rar ras rau rba rbb rbc rbh rbk rbr rbs rbu rca rcb rcc rch rcr rcs rcu rh- rha rhb rhc rhh rhr rhs rhu rkb rkc rkk rks rku rra rrb rrc rrh rrk rrr rrs rru rsa rsb rsc rsh rsk rsr rss rsu rua rub ruc ruh ruk rur rus ruu saa sab sac sah sak sar sas sau sba sbb sbc sbh sbk sbr sbs sbu sca scb scc sch sck scr scs scu sh- sha shb shc shh shk shr shs shu sk- ska skb skc skh skk skr sks sku sr- sra srb src srh srk srr srs ss- ssa ssb ssc ssh ssk ssr sss ssu sua sub suc suh suk sur sus suu ua- uaa uab uac uah uak uar uas uau uba ubb ubc ubh ubk ubr ubs ubu uca ucb ucc uch uck ucr ucs ucu uha uhb uhc uhh uhr uhs uhu uka ukb ukc ukk ukr uku ur- ura urb urc urk urr urs uru usa usb usc ush usk usr uss usu uua uuc uur uus uuu

a-ak a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aack aacr aacs aacu aaha aahk aahs aaka aaku aara aarc aars aaru aasa aasc aass aasu aaus abaa abab abac abak abar abas abau abb- abba abbb abbr abbs abca abcb abcc abch abcr abcs abha abhr abhs abra abrc abrs abs- absa abss absu abua abuk abus acaa acab acac acar acas acba acca accc acch accs accu acha achh achr achs achu acks acr- acra acrc acrr acrs acsa acsc acss acu- acur acus ahab ahac ahah ahar ahas ahau ahha ahhs ahra ahrc ahrr ahrs ahsa ahss ahua ahus akaa akah akar akas akca akha akhs akka akku akr- akra aksa aksu akua arab arac arah arak arar aras arau arba arbh arbs arc- arca arch arcs arh- arhs arka arkh arks arr- arra arrc arrh arrk arrr arrs arru ars- arsa arsc arsk arsu arua arub asaa asab asac asah asak asar asas asau asba asbu asc- asca ascb ascc asch ascr asha ashk ashs ashu aska askr asks asra asrc asrs asru assa assc assh assk assr asss assu asub asur asus auaa auca auch auks aur- aura ausa aush ausu baaa baah baak baar baas baba babb babr babs babu bac- baca bacc bach back bacs baha bahr bahs bahu bak- baka bakh bakr baks baku bar- bara barb barc barh bark barr bars baru basa basc bash bask bass basu bau- bauk baur bbas bbau bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcra bcrs bcru bcsa bcsc bcss bcuc bhar bhca bhcc bhhs bhra bhur bhuu bkhs brab brac brah brak bras brau brca brcb brhs brka brkb brrr brrs brsb brsr bruc bruh brus bsaa bsac bsas bscs bshs bsra bssc buar buba bubb bubs bubu buca bucc buch buck bucs bucu buha buhr buhs buka bukh bukk buku bur- bura burb burh burk burr burs buru busa busc bush busk buss busu buus caaa caab caac caah caas caba cabs cabu cac- caca cacc cach cack cacr caha cahs caka cara carb carc cark carr cars casa casb casc cash cask casr cass casu cauc cauk caus cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbha cbhs cbka cbkr cbrh cbsa cbsc cbus ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccha cchr cchs ccra ccrc ccrs ccsa ccss ccuc ccus chaa chab chac chah chak char chas chau chca chch chcs chha chhs chka chkb chks chra chrb chrc chrr chrs chsc chsh chsr chua chub chuk chur chus ckac ckbc ckch ckck ckcs ckhs ckrc cksa cksb cksh crab crac crar cras crau crbc crbu crca crcc crcr crhs crkc crsa crss crub cruk crus csaa csab csac csak csar csas cscb cscc csch cscr cscs cshs cska csks csra csrc csrs cssa cssr csua csur csus cuau cub- cuba cubb cubs cuca cucc cuck