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 akqa akr- akra aksa aksu akua aqar aqas aqra aqsa aqu- aqua arab arak araq arar aras arau arba arbs arka arks arq- arqa arr- arra arrk arrr arrs arru ars- arsa arsk arsu arua arub aruq asaa asab asak asar asas asau asba asbu aska askr asks asra asrs asru assa assk assq 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 baqa bar- bara barb bark barq barr bars baru basa bask bass basu bau- bauk baur bbas bbau bbbb bbbq bbbs bbqs brab brak bras brau brka brkb brrr brrs brsb brsr brus bsaa bsas bsra buar buba bubb bubq bubs bubu buka bukk buku buqa bur- bura burb burk burr burs buru busa busk buss busu buus kaaa kaab kaak kaaq kaar kaas kaba kabb kabq 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 kbaq kbar kbas kbba kbbb kbbk kbbr kbbs kbbu kbkb kbkk kbkr kbqb kbqr kbra kbrb kbrk kbrq kbru kbsa kbsb kbsk kbsq kbsr kbss kbsu kbua kbub kbuk kbur kbus kbuu kkaa kkaq kkar kkba kkbb kkbq kkbr kkbs kkkk kkqq kkrb kkrk kkrq kkrr kkrs kksa kksr kkss kksu kkua kkus kkuu kqak kqaq kqba kqbb kqbk kqbr kqbu kqkk kqks kqqa kqqk kqqq kqqs kqra kqrk kqrq kqrr kqrs kqsk kqsr kqss kqur krab krak krar kras krba krbb krbk krbq krbr krka krkk krkq krkr krks krku krqb krqk krqq krqr krqu krrb krrk krrq krrr krrs krsa krsk krsq krsr krss krsu krua kruk krur ksab ksak ksaq ksar ksas ksau ksba ksbq ksbr ksbs kska kskb kskk kskq kskr ksks ksku ksqa ksqb ksqq ksqs ksra ksrb ksrq ksrr ksrs kssa kssq kssr ksss kssu ksua ksub ksuu kuar kuau kuba kubb kubq kubr kubs kubu kuka kukk kuks kuku kuqq kura kurb kurk kurq kurr kurs kuru kusa kusb kusq kusu kuub kuuk kuur kuuu qara qars qaru qasr qass qqqq qrss qsas qsqs qsrs quaa quab quar quas quba quu- 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 suqs sur- sura surr surs suru sus- susa susk suss susu suus uars uaru uasa uaua ubar ubba ubra ukba ukra uksa ukur uqar uras urau urba urbs urka urra ursa urss ursu uruk uruq urur urus us-a us-k usaa usak usar usas usba usbr usbs uska usra ussa ussb ussr usss ussu usua usus uuuu