a-a a-b a-t aaa aab aar aas aat aau ab- aba abb abr abs abt abu ar- ara arb arr ars art aru as- asa asb asr ass ast asu at- ata atb atr ats att atu au- aua aub aur aus aut b-u baa bab bar bas bat bau bba bbb bbr bbs bbt bbu bra brb brr brs brt bru bsa bsb bsr bss bst bsu bta btb btr bts btt btu bua bub bur bus but buu ra- raa rab rar ras rat rau rba rbb rbr rbs rbt rbu rra rrb rrr rrs rrt rru rsa rsb rsr rss rst rsu rta rtb rtr rts rtt rtu rua rub rur rus rut ruu saa sab sar sas sat sau sba sbb sbr sbs sbt sbu sr- sra srb srr srs srt ss- ssa ssb ssr sss sst ssu sta stb str sts stt stu sua sub sur sus sut suu taa tab tar tas tat tau tba tbb tbr tbs tbt tbu tra trb trr trs trt tru tsa tsb tsr tss tst tsu tta ttb ttr tts ttt ttu tua tub tur tus tut tuu ua- uaa uab uar uas uat uau uba ubb ubr ubs ubt ubu ur- ura urb urr urs urt uru usa usb usr uss ust usu uta utb utr uts utt utu uua uur uus uut uuu

aaaa aaab aaar aaas aaba aabb aabt aara aars aart aaru aasa aass aast aasu aata aatt aaus abaa abab abar abas abat abau abb- abba abbb abbr abbs abbt abra abrs abs- absa abss absu abta abts abtu abua abus abut arab arar aras arat arau arba arbs arr- arra arrr arrs arrt arru ars- arsa arst arsu arta artr arts arua arub arut asaa asab asar asas asat asau asba asbu asra asrs asru assa assr asss asst assu asta astb astr asts asub asur asus at-t ataa atab atar atas atat atbs atra atru atsb atst atta attr atts attu atua atub atur atus auaa aur- aura ausa aust ausu aut- auts baaa baar baas baat baba babb babr babs babu bar- bara barb barr bars bart baru basa bass bast basu bata bats batt batu bau- baur bbas bbau bbbb bbbs brab bras brat brau brrr brrs brsb brsr brst brus brut bsaa bsas bsat bsra bsts btaa btrt btss bttb btus buar buat buba bubb bubs bubu bur- bura burb burr burs burt buru busa buss bust busu but- buta buts butt buus raab raas raat raba rabb rabs rabu rara rarb rars rasa rass rast rasu rata rats ratt ratu raua raub raus raut rbbb rbbr rbbs rbss rbst rras rrat rrrr rsaa rssa rsts rstu rsua rtas rtss rtts ruas ruba rubb rubs rubu rura rurs ruru rusa russ rust rusu ruta ruts rutt rutu saab saar saas saat saba sabb sabr sabs sabu sara sarr sars sart saru sasa sass sast sata satb satr sats satt satu saua saur saus saut sbaa sbar sbas sbbs sbsa sbst sbus sras srta srtr srub ssaa ssab ssas ssat ssau ssbr ssra ssrs sssa sssb ssss ssta sstb ssts stab star stas stat stau stbs stra strs stru stss sttr stub stur stus stut suar suas suat sub- suba subb subs sur- sura surr surs surt suru sus- susa suss sust susu suta sutu suus taa- taar taas taat taba tabb tabs tabu tara tarb tarr tars tart taru tasa tasb tasr tass tast tasu tata tatb tatr tats tatt tatu taua taub taur taus taut tbar tbas tbbs tbrb tbst tbta traa trab tras trat trau trra trst trtr trub trus trut truu tsaa tsar tsat tsau tssa tssr tsst tsts ttab ttbb ttss tttt tuar tuas tuat tuba tubb tubr tubs tubu tura turb turr turs turt turu tusa tuss tust tuta tuts tutt tutu uars uart uaru uasa uata uatu uaua ubar ubba ubra uras urat urau urba urbs urra ursa urss ursu urts urur urus urut us-a usaa usar usas usat usba usbr usbs usra ussa ussb ussr usss usst ussu usta ustb usts usua usus utas utau utsa uttu uuta uuuu

-aaa- aaaas aaasa aaass aaata aabaa aabba aabra aarau aarts aasra aatsr abaab ababa ababs ababu abara abaru abasa abass abbar abbas abbat abbrs abbur abrar abras abrus absar abstr absut abtaa abtar abura aburr abust abuta abuts abutt ar-ab araat arab- araba arabs arara arars araru arass arasu arata arbab arbar arbas arbat arbus arras arrau arrua arsat artar artas artat artur artus aruaa aruba arura aruru arus- arusa aruta asaba asara asasa asats asaut asbru asrar assab assas assat assts assur astab astar astas astat astr- astra astur asubs asura atabu atara atars ataru atasu atats atbar atbat atrab atras atrst atrus attar attas attra attur attus atura atusa auass aubas aurar auras aurat aurra ausar ausra aussa austa baars baart baata babar babas babau babbs babra babur babus babut baraa barab barar baras barat barba barbs barbu barra barrs barru barsa barss barst barta barts barua barus barut basab basar basra bassa bassu basta basts bastu basut batab batar batas batat batau batra batsa batsu batta batts battu batur batus baura bauru bauta bbart bbuss braas braat brasa brass brast brats bratt bratu braut brrar brrrr brusa bruss brust bruta bsaba bstar btr-t btstu buats bubas bubba buraa buras burat burbs burra burrs burru bursa burst burta burts burtt burus burut busaa busra bussa bussu busta busts busua busur busut busuu butat butts butua butut ra-ra raaba raasa rabab rabas rabat rabba rabta rabut rarus rasar rasas rasat rasau rasra rassa rasta ratas ratau ratba ratra ratta rattu ratua ratus rausu rauta rrsta rsust rubab rubat rubba rubra rubus rusar rusas russa rusta rusts rustu rutab rutar rutas ruusa ruutu s-bus sa-ra saaba saabs saara saasa saasu sabar sabas sabat sabau sabra sabsa sabur sabus sabut saraa sarab saras sarat sarau sarbu sarra sarsa sarsu sarta sarts saru- sarur sarus sarut sassa sat-b satat satau satra satsu satta sattu