a-a a-b aaa aab aad aar aas aau ab- aba abb abd abr abs abu ad- ada adb add adr ads adu ar- ara arb ard arr ars aru as- asa asb asd asr ass asu au- aua aub aud aur aus b-u baa bab bad bar bas bau bba bbb bbd bbr bbs bbu bda bdb bdd bdr bds bdu bra brb brd brr brs bru bsa bsb bsd bsr bss bsu bua bub bud bur bus buu daa dab dad dar das dau dba dbb dbd dbr dbs dbu dda ddb ddd ddr dds ddu dra drb drd drr drs dru dsa dsb dsd dsr dss dsu dua dub dud dur dus ra- raa rab rad rar ras rau rba rbb rbd rbr rbs rbu rda rdb rdd rdr rds rdu rra rrb rrd rrr rrs rru rsa rsb rsd rsr rss rsu rua rub rud rur rus ruu saa sab sad sar sas sau sba sbb sbd sbr sbs sbu sda sdb sdd sdr sds sdu sr- sra srb srd srr srs ss- ssa ssb ssd ssr sss ssu sua sub sud sur sus suu ua- uaa uab uad uar uas uau uba ubb ubr ubs ubu uda udb udd udr uds udu ur- ura urb urd urr urs uru usa usb usd usr uss usu uua uur uus uuu

aaaa aaab aaad aaar aaas aaba aabb aabd aada aads aadu aara aard aars aaru aasa aasd aass aasu aaus abaa abab abad abar abas abau abb- abba abbb abbr abbs abda abdu abra abrs abs- absa absd abss absu abua abud abus adaa adab adad adar adas adba adda addd addr adds addu adra adrs adsa adsr adss adua adub adur arab arad arar aras arau arba arbs arda ards ardu arr- arra arrr arrs arru ars- arsa arsd arsu arua arub arud asaa asab asad asar asas asau asba asbu asda asds asra asrs asru assa assd assr asss assu asub asud asur asus auaa aur- aura aurd ausa ausd ausu baaa baad baar baas baba babb babr babs babu bada badb badd badr bads badu bar- bara barb bard barr bars baru basa bass basu bau- baud baur bbad bbas bbau bbbb bbbs bbdd bd-r bdsd brab brad bras brau brda brds brrr brrs brsb brsr brud brus bsaa bsas bsbd bsra bsrd bssd buad buar buba bubb bubs bubu buda budb budd buds budu bur- bura burb burd burr burs buru busa buss busu buus daab daad daar daas daau daba dabb dabs dabu dada dads dadu dara darb dard darr dars daru dasa dasb dasd dass daub daud daur daus dbar dbas dbrs dbsa dbss dbus dddd ddss ddub draa drab drad drar dras drau drba drda drra drrs drsa drua drub drus druu dsba dsda dsdr dsrr dssa duaa duab duad duar duas dub- duba dubb dubs dubu duda dudd duds dudu dura duru dusa duur raab raad raas raba rabb rabs rabu rada radd radr rads radu rara rarb rars rasa rasd rass rasu raua raub raud raus rbbb rbbr rbbs rbds rbsd rbss rdas rrad rras rrrr rsaa rsdd rsds rssa rsua ruad ruas ruba rubb rubs rubu ruda rudd ruds rura rurd rurs ruru rusa russ rusu ruud saab saad saar saas saba sabb sabr sabs sabu sada sadb sadd sadr sads sadu sara sard sarr sars saru sasa sasd sass saua saud saur saus sbaa sbar sbas sbbs sbds sbsa sbsd sbus sdau sdba sdds sdrs sdss sdsu sras srsd srub ssaa ssab ssas ssau ssbr ssdd ssra ssrs sssa sssb ssss suar suas sub- suba subb subd subs suda sudd suds sur- sura surd surr surs suru sus- susa susd suss susu suus uars uaru uasa uasd uaua ubar ubba ubra ubud udaa udad udar udas udau udds udra udsd urad uras urau urba urbs urda urds urdu urra ursa urss ursu urur urus us-a usaa usad usar usas usba usbr usbs usda usds usra ussa ussb ussr usss ussu usua usus uuuu

-aaa- -abad aaaas aaasa aaass aabaa aabba aabra aadas aarau aasra abaab ababa ababs ababu abada abara abaru abasa abass abbad abbar abbas abbrs abbud abbur abrad abrar abras abrud abrus absar abuda abura aburr adaba adada adads adara adars adasa addas addra addsa addur adrad adrar adras ads-b aduba ar-ab arab- araba arabs arada arads arara arars araru arass arasu arbab arbar arbas arbus ardab ardas ardra ardua ardud arras arrau arrua aruaa aruba arura aruru arus- arusa asaba asada asara asasa asbad asbru asdas asrar assab assad assas assur asubs asuda asura auass aubad aubas audad audra audru aurad aurar auras aurra ausar ausra aussa baard baars babar babas babau babbs babra babur babus badar badas badra badur baraa barab barad barar baras barba barbs barbu barda bards bardu barra barrs barru barsa barss barua barud barus basab basad basar basra bassa bassu bauds baura bauru bbuss bdubs braas brada brads bradu brard brasa brass braud brdda brrar brrrr brud- bruds brusa bruss bsaba buada bubas bubba budda budds buddu budur buraa buras burbs burda burds burra burrs burru bursa burud burus busaa busad busra bussa bussu busua busur busuu d-a-d d-bus d-rad daada daara daasa dabar dabas dabba dabbs dabbu dabra dabua dabur dabus dadar dadas dadau dadda dadra dadur daraa darab darba darbs darbu darda dards darra darrs darss darur dasar dasds dassa dassu daubs dauda daura dausa ddddd draba drabs drubs duads duara duars dubar dubas dubau dubba dubbs dubra dubus dudar dudas dudua durab duras durba durra ra-ra raaba raads raard raasa rabab rabad rabas rabba rabda rabud radar radas radau rarus rasar rasas rasau rasra rassa rauda rausu rubab rubba rubra rubus rudar rudas rudds rudra rudus rusar rusas russa ruusa s-bus sa-ra saaba saabs saada saara saasa saasu sabar sabas sabau sabda sabra sabsa sabur sabus sadad sadar sadas sadda sadra sadus saraa sarab saras sarau sarbu sarda sards sardu sarra sarsa sarsu saru- sarur sarus sasda sassa sauba sauda sauds saur- saura srb-a ssard