-ana a-un aaaa aaab aaan aaar aaas aaba aabb aana aara aars aaru aasa aass aasu aaus abaa abab aban abar abas abau abb- abba abbb abbr abbs abnu abra abrs abs- absa abss absu abua abun abus ana- anaa anab anan anar anas anau anba anbb anbu anna annb anns ansa ansu anua anub anun anus arab aran arar aras arau arba arbs arna arns arr- arra arrr arrs arru ars- arsa arsu arua arub arun asaa asab asan asar asas asau asba asbu asra asrs asru assa assn assr asss assu asub asun asur asus auaa auna aur- aura ausa ausu baaa baan baar baas baba babb babr babs babu bana bann banr bans banu bar- bara barb barn barr bars baru basa bass basu bau- baur bbas bbau bbbb bbbs bnas bnrr bnss brab bran bras brau brna brns brrr brrs brsb brsr brun brus bsaa bsas bsns bsra buar buba bubb bubs bubu buna bunb bunn buns bunu bur- bura burb burn burr burs buru busa buss busu buus naaa naab naan naar naas naba nabs nabu nan- nana nanb nann nans nanu nara narn narr nars naru nas- nasa nasb nasr nass nasu naur naus nbaa nbar nbas nnnn nnsa nnss nrab nras nrna nrsa nsaa nsar nsna nsnr nsra nssa nssb nssr nsss nsub nuan nuba nubs nuna nunn nuns nura nurn nurr nurs nuru nuss nusu raab raan raas raba rabb rabs rabu rana rann rans rara rarb rars rasa rass rasu raua raub raun raus rbbb rbbr rbbs rbss rnas rnbr rras rrna rrrr rrun rsaa rsna rsnn rsnr rssa rsua ruan ruas ruba rubb rubs rubu runa runn runs rura rurs ruru rusa russ rusu ruun saab saan saar saas saba sabb sabr sabs sabu sana sann sanr sans sanu sara sarn sarr sars saru sasa sass saua saun saur saus sbaa sbar sbas sbbs sbsa sbus snab snar snas snba snns snra snrs snub snur snus sras srna srnn srub ssaa ssab ssan ssas ssau ssbn ssbr ssns ssra ssrs sssa sssb ssss suan suar suas sub- suba subb subs sun- suna sunb sunn suns sunu sur- sura surn surr surs suru sus- susa suss susu suus uars uaru uasa uaua ubar ubba ubra unaa unan unar unas unau unna unns unra unrs uns- unsa unus uran uras urau urba urbs urna urns urra ursa urss ursu urun urur urus us-a usaa usan usar usas usba usbr usbs usna usnr usnu usra ussa ussb ussr usss ussu usua usun usus uuuu