a-a a-b a-t aaa aab aad aar aas aat aau ab- aba abb abd abr abs abt abu ad- ada adb add adr ads adt adu ar- ara arb ard arr ars art aru as- asa asb asd asr ass ast asu at- ata atb atd atr ats att atu au- aua aub aud aur aus aut b-u baa bab bad bar bas bat bau bba bbb bbd bbr bbs bbt bbu bda bdb bdd bdr bds bdt bdu bra brb brd brr brs brt bru bsa bsb bsd bsr bss bst bsu bta btb btd btr bts btt btu bua bub bud bur bus but buu daa dab dad dar das dat dau dba dbb dbd dbr dbs dbt dbu dda ddb ddd ddr dds ddt ddu dra drb drd drr drs drt dru dsa dsb dsd dsr dss dst dsu dta dtb dtd dtr dts dtt dtu dua dub dud dur dus dut ra- raa rab rad rar ras rat rau rba rbb rbd rbr rbs rbt rbu rda rdb rdd rdr rds rdt rdu rra rrb rrd rrr rrs rrt rru rsa rsb rsd rsr rss rst rsu rta rtb rtd rtr rts rtt rtu rua rub rud rur rus rut ruu saa sab sad sar sas sat sau sba sbb sbd sbr sbs sbt sbu sda sdb sdd sdr sds sdt sdu sr- sra srb srd srr srs srt ss- ssa ssb ssd ssr sss sst ssu sta stb std str sts stt stu sua sub sud sur sus sut suu taa tab tad tar tas tat tau tba tbb tbd tbr tbs tbt tbu tda tdb tdd tdr tds tdt tdu tra trb trd trr trs trt tru tsa tsb tsd tsr tss tst tsu tta ttb ttd ttr tts ttt ttu tua tub tud tur tus tut tuu ua- uaa uab uad uar uas uat uau uba ubb ubr ubs ubt ubu uda udb udd udr uds udt udu ur- ura urb urd urr urs urt uru usa usb usd usr uss ust usu uta utb utd utr uts utt utu uua uur uus uut uuu

aaaa aaab aaad aaar aaas aaba aabb aabd aabt aada aads aadt aadu aara aard aars aart aaru aasa aasd aass aast aasu aata aatt aaus abaa abab abad abar abas abat abau abb- abba abbb abbr abbs abbt abda abdu abra abrs abs- absa absd abss absu abta abts abtu abua abud abus abut adaa adab adad adar adas adat adba adda addd addr adds addu adra adrs adsa adsr adss adst adta adts adua adub adur arab arad arar aras arat arau arba arbs arda ards ardu arr- arra arrr arrs arrt arru ars- arsa arsd arst arsu arta artr arts arua arub arud arut asaa asab asad asar asas asat asau asba asbu asda asds asra asrs asru assa assd assr asss asst assu asta astb astr asts asub asud asur asus at-t ataa atab atad atar atas atat atbs atdt atra atru atsb atst atta attr atts attu atua atub atur atus auaa aur- aura aurd ausa ausd aust ausu aut- auts baaa baad baar baas baat baba babb babr babs babu bada badb badd badr bads badu bar- bara barb bard barr bars bart baru basa bass bast basu bata bats batt batu bau- baud baur bbad bbas bbau bbbb bbbs bbdd bd-r bdsd brab brad bras brat brau brda brds brdt brrr brrs brsb brsr brst brud brus brut bsaa bsas bsat bsbd bsra bsrd bssd bsts btaa btdt btrt btss bttb btus buad buar buat buba bubb bubs bubu buda budb budd buds budu bur- bura burb burd burr burs burt buru busa buss bust busu but- buta buts butt buus daab daad daar daas daau daba dabb dabs dabt dabu dada dads dadu dara darb dard darr dars dart daru dasa dasb dasd dass dast data datr dats datt datu daub daud daur daus daut dbar dbas dbrs dbsa dbss dbtt dbus dddd ddss ddts ddub draa drab drad drar dras drat drau drba drda drra drrs drsa drua drub drus drut druu dsba dsda dsdr dsrr dssa dsst dsts dtaa dtss duaa duab duad duar duas duat dub- duba dubb dubs dubu duda dudd duds dudu dura durt duru dusa dust duta duts duur duut raab raad raas raat raba rabb rabs rabu rada radd radr rads radt radu rara rarb rars rasa rasd rass rast rasu rata rats ratt ratu raua raub raud raus raut rbbb rbbr rbbs rbds rbsd rbss rbst rdas rrad rras rrat rrrr rsaa rsdd rsds rssa rsts rstu rsua rtas rtdt rtss rtts ruad ruas ruba rubb rubs rubu ruda rudd ruds rura rurd rurs ruru rusa russ rust rusu ruta ruts rutt rutu ruud saab saad saar saas saat saba sabb sabr sabs sabu sada sadb sadd sadr sads sadt sadu sara sard sarr sars sart saru sasa sasd sass sast sata satb satd satr sats satt satu saua saud saur saus saut sbaa sbar sbas sbbs sbds sbsa sbsd sbst sbus sdau sdba sdds sdrs sdss sdsu sras srsd srta srtr srub ssaa ssab ssas ssat ssau ssbr ssdd ssra ssrs sssa sssb ssss ssta sstb sstd ssts stab stad star stas stat stau stbd stbs stds stra strd strs stru stss sttd sttr stub stud stur stus stut suar suas suat sub- suba subb subd subs suda sudd suds sur- sura surd surr surs surt suru sus- susa susd suss sust susu suta sutu suus taa- taar taas taat taba tabb tabs tabu tada tads tara tarb tard 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 tddb tdra tdss traa trab trad tras trat trau trra trsd trst trtr trub trud trus trut truu tsaa tsar tsat tsau tsbd tsdb tssa tssr tsst tsts ttab ttbb ttss tttt tuar tuas tuat tuba tubb tubr tubs tubu tudu tura turb turd turr