a-a a-b aaa aab aak aar aas aau ab- aba abb abk abr abs abu aka akb akk akr aks aku ar- ara arb ark arr ars aru as- asa asb ask asr ass asu au- aua aub auk aur aus b-u baa bab bak bar bas bau bba bbb bbk bbr bbs bbu bka bkb bkk bkr bks bra brb brk brr brs bru bsa bsb bsk bsr bss bsu bua bub buk bur bus buu ka- kaa kab kak kar kas kau kba kbb kbk kbr kbs kbu kkb kkk kkr kks kku kra krk krr krs kru ksa ksb ksk ksr kss ksu kub kuk kur kus kuu ra- raa rab rak rar ras rau rba rbb rbk rbr rbs rbu rkb rkk rks rku rra rrb rrk rrr rrs rru rsa rsb rsk rsr rss rsu rua rub ruk rur rus ruu saa sab sak sar sas sau sba sbb sbk sbr sbs sbu sk- ska skb skk skr sks sku sr- sra srb srk srr srs ss- ssa ssb ssk ssr sss ssu sua sub suk sur sus suu ua- uaa uab uak uar uas uau uba ubb ubk ubr ubs ubu uka ukb ukk ukr uku ur- ura urb urk urr urs uru usa usb usk usr uss usu uua uur uus uuu

a-ak aaaa aaab aaar aaas aaba aabb aaka aaku aara aars aaru aasa aass aasu aaus abaa abab abak abar abas abau abb- abba abbb abbr abbs abra abrs abs- absa abss absu abua abuk abus akaa akar akas akka akku akr- akra aksa aksu akua arab arak arar aras arau arba arbs arka arks arr- arra arrk arrr arrs arru ars- arsa arsk arsu arua arub asaa asab asak asar asas asau asba asbu aska askr asks asra asrs asru assa assk assr asss assu asub asur asus auaa auks aur- aura ausa ausu baaa baak baar baas baba babb babr babs babu bak- baka bakr baks baku bar- bara barb bark barr bars baru basa bask bass basu bau- bauk baur bbas bbau bbbb bbbs brab brak bras brau brka brkb brrr brrs brsb brsr brus bsaa bsas bsra buar buba bubb bubs bubu buka bukk buku bur- bura burb burk burr burs buru busa busk buss busu buus kaaa kaab kaak kaar kaas kaba kabb kabr kabu kaka kakk kaks kaku kara karb kark karr kars karu kas- kasa kasb kask kasr kass kasu kau- kaub kauk kaur kaus kbaa kbab kbak kbar kbas kbba kbbb kbbk kbbr kbbs kbbu kbkb kbkk kbkr kbra kbrb kbrk kbru kbsa kbsb kbsk kbsr kbss kbsu kbua kbub kbuk kbur kbus kbuu kkaa kkar kkba kkbb kkbr kkbs kkkk kkrb kkrk kkrr kkrs kksa kksr kkss kksu kkua kkus kkuu krab krak krar kras krba krbb krbk krbr krka krkk krkr krks krku krrb krrk krrr krrs krsa krsk krsr krss krsu krua kruk krur ksab ksak ksar ksas ksau ksba ksbr ksbs kska kskb kskk kskr ksks ksku ksra ksrb ksrr ksrs kssa kssr ksss kssu ksua ksub ksuu kuar kuau kuba kubb kubr kubs kubu kuka kukk kuks kuku kura kurb kurk kurr kurs kuru kusa kusb kusu kuub kuuk kuur kuuu raab raak raas raba rabb rabk rabs rabu raka rakk raku rara rarb rark rars rasa rask rass rasu raua raub rauk raus rbbb rbbr rbbs rbss rkss rras rrrr rsaa rssa rsua ruas ruba rubb rubs rubu ruka rukk ruku rura rurs ruru rusa rusk russ rusu saab saak saar saas saba sabb sabr sabs sabu saka sakb sakk saks saku sara sark sarr sars saru sasa sask sass saua sauk saur saus sbaa sbar sbas sbbs sbrk sbsa sbus skab skar skra skss skua skur sras srub ssaa ssab ssas ssau ssbr ssra ssrs sssa sssb ssss suar suas sub- suba subb subs suka suks suku sur- sura surr surs suru sus- susa susk suss susu suus uars uaru uasa uaua ubar ubba ubra ukba ukra uksa ukur uras urau urba urbs urka urra ursa urss ursu uruk urur urus us-a us-k usaa usak usar usas usba usbr usbs uska usra ussa ussb ussr usss ussu usua usus uuuu

-aaa- aaaas aaasa aaass aabaa aabba aabra aarau aasra abaab ababa ababs ababu abaka abara abaru abasa abask abass abbar abbas abbrs abbur abkar abrak abrar abras abrus absar abura aburr akaba akasa akbar akbas akbuk akkas akkra akkub akkur akrak akrar aksar akuku akura ar-ab arab- araba arabs araks araku arara arars araru arass arasu arbab arbar arbas arbus arkar arkas arrak arras arrau arrua arsuk aruaa aruba arura aruru arus- arusa asaak asaba asaka asara asasa asbak asbru askar askas asksa askus asrar assab assas assur asubs asuka asura auass aubas aukra aurar auras aurra ausar ausra aussa b-r-k baars babak babar babas babau babbs babka babra babsk babur babus bakar bakau bakka bakra baksa bakur baraa barab barak barar baras barba barbs barbu bark- barka barks barra barrs barru barsa barss barua barus basab basak basar baska basks basra bassa bassu baura bauru bbuss braak braas brasa brask brass brrar brrrr brusa brusk bruss bsaba bubas bubba bubka bukk- buksa buraa burak buras burbs burka burks burra burrs burru bursa buruk burus busaa busks busra bussa bussu busua busur busuu k-rab kaaba kaabu kaaks kaaru kabaa kabab kabak kabar kabas kabba kabru kabsa kabua kabur kakar kakas kakau kakka kakku kakra kakur kakus karak karas karbu karka karku karsa karsk karsu karuk karur kasab kasak kasba kaska kasra kassa kassu kasur kaura kauru kausa kraak kraar kraka krars krass kraus krusa ksars kuaka kuara kuars kubau kubba kubra kukak kukar kukas kukka kuksu kukua kukur kurak kurar kurbu kurka kurku kursa kursk kuruk kurus kusar kusur kuusk ra-ra raaba raasa rabab rabak rabas rabba rakaa rakab rarus rasak rasar rasas rasau raska rasra rassa rasuk rausu ruaka ruark rubab rubba rubra rubus rukus rurak rurka rusar rusas ruska rusks russa ruusa s-bus sa-ra saaba saabs saara saasa saasu sabak sabar sabas sabau sabra