a-a a-b a-t aaa aab aad aan aar aas aat ab- aba abb abd abn abr abs abt ad- ada adb add adn adr ads adt an- ana anb and ann anr ans ant ar- ara arb ard arn arr ars art as- asa asb asd asn asr ass ast at- ata atb atd atn atr ats att baa bab bad ban bar bas bat bba bbb bbd bbn bbr bbs bbt bda bdb bdd bdr bds bdt bna bnb bnd bnn bnr bns bnt bra brb brd brn brr brs brt bsa bsb bsd bsn bsr bss bst bta btb btd btn btr bts btt daa dab dad dan dar das dat dba dbb dbd dbn dbr dbs dbt dda ddb ddd ddn ddr dds ddt dna dnb dnd dnn dnr dns dnt dra drb drd drn drr drs drt dsa dsb dsd dsn dsr dss dst dta dtb dtd dtn dtr dts dtt naa nab nad nan nar nas nat nba nbb nbd nbn nbr nbs nbt nda ndb ndd ndn ndr nds ndt nna nnb nnn nns nnt nra nrb nrd nrn nrr nrs nrt nsa nsb nsd nsn nsr nss nst nta ntb ntd ntn ntr nts ntt ra- raa rab rad ran rar ras rat rba rbb rbd rbn rbr rbs rbt rda rdb rdd rdn rdr rds rdt rna rnb rnd rnn rnr rns rnt rra rrb rrd rrn rrr rrs rrt rsa rsb rsd rsn rsr rss rst rta rtb rtd rtn rtr rts rtt saa sab sad san sar sas sat sba sbb sbd sbn sbr sbs sbt sda sdb sdd sdn sdr sds sdt sna snb snd snn snr sns snt sr- sra srb srd srn srr srs srt ss- ssa ssb ssd ssn ssr sss sst sta stb std stn str sts stt taa tab tad tan tar tas tat tba tbb tbd tbn tbr tbs tbt tda tdb tdd tdn tdr tds tdt tna tnb tnd tnn tnr tns tnt tra trb trd trn trr trs trt tsa tsb tsd tsn tsr tss tst tta ttb ttd ttn ttr tts ttt

-ana aaaa aaab aaad aaan aaar aaas aaba aabb aabd aabt aada aads aadt aana aand aara aard aars aart aasa aasd aass aast aata aatt abaa abab abad aban abar abas abat abb- abba abbb abbr abbs abbt abda abra abrs abs- absa absd abss abta abts adaa adab adad adan adar adas adat adba adda addd addn addr adds adna adns adra adrs adsa adsr adss adst adta adts ana- anaa anab anad anan anar anas anat anba anbb and- anda andr ands andt anna annb anns annt ansa ansd ant- anta antr ants antt arab arad aran arar aras arat arba arbs arda ards arna arnd arns arnt arr- arra arrr arrs arrt ars- arsa arsd arst arta artr arts asaa asab asad asan asar asas asat asba asda asds asra asrs assa assd assn assr asss asst asta astb astr asts at-t ataa atab atad atan atar atas atat atbs atdt atna atns atra atrn atsb atst atta attn attr atts baaa baad baan baar baas baat baba babb babr babs bada badb badd badr bads bana band bann banr bans bant bar- bara barb bard barn barr bars bart basa bass bast bata batn bats batt bbad bbas bbbb bbbs bbdd bd-r bdna bdsd bnas bnrr bnss bnta brab brad bran bras brat brda brds brdt brna brns brrr brrs brsb brsr brst bsaa bsas bsat bsbd bsnd bsns bsra bsrd bssd bsts btaa btan btdt btrt btss bttb d-na daab daad daan daar daas daba dabb dabs dabt dada dads dana dand dann danr dans dant dara darb dard darn darr dars dart dasa dasb dasd dass dast data datr dats datt dbar dbas dbrn dbrs dbsa dbss dbtt dddd ddss ddts dnaa dnab dnad dnan dnas dnat dnsa dntt draa drab drad drar dras drat drba drda drna drra drrs drsa dsba dsda dsdr dsrr dssa dssn dsst dstn dsts dtaa dtna dtnb dtss naaa naab naad naan naar naas naat naba nabs nada nadr nads nan- nana nanb nand nann nans nant nara nard narn narr nars nart nas- nasa nasb nasd nasr nass nast nata nats natt nbaa nbad nbar nbas ndaa ndas nddb ndna ndnt ndss nndb nnnn nnsa nnss nntn nrab nras nrds nrna nrrd nrsa nrta nrts nsaa nsar nsds nsdt nsna nsnr nsra nsrd nssa nssb nssr nsss nstd nsts ntds ntnd ntsb ntss nttr raab raad raan raas raat raba rabb rabs rada radd radr rads radt rana rand rann rans rant rara rarb rars rasa rasd rass rast rata rats ratt rbbb rbbr rbbs rbds rbsd rbss rbst rdas rdna rnas rnbr rnds rnnt rntd rrad rras rrat rrna rrrr rsaa rsdd rsds rsna rsnn rsnr rssa rsts rtan rtas rtdt rtnd rtns rtss rtts saab saad saan saar saas saat saba sabb sabr sabs sada sadb sadd sadr sads sadt sana sand sann sanr sans sant sara sard sarn sarr sars sart sasa sasd sass sast sata satb satd satn satr sats satt sbaa sbar sbas sbbs sbds sbsa sbsd sbst sbtn sdba sdds sdna sdrs sdss snab snad snar snas snat snba snda snns snra snrs snsd sntr sras srna srnn srsd srta srtr ssaa ssab ssan ssas ssat ssbn ssbr ssdd ssns ssra ssrs sssa sssb ssss ssta sstb sstd ssts stab stad stan star stas stat stbd stbs stds stnd stnn stnr stns stra strd strn strs stss sttd sttr taa- taan taar taas taat taba tabb tabs tada tads tana tand tann tans tant tara tarb tard tarn tarr tars tart tasa tasb tasr tass tast tata tatb tatr tats tatt tbar tbas tbbs tbrb tbst tbta tddb tdna tdra tdss tndd tnts traa trab trad tran tras trat trna trra trsd trst trtr tsaa tsar tsat tsbd tsdb tsna tssa tssr tsst tsts ttab ttbb ttss tttt

-aaa- -abad -stan a-dna aaaas aaasa aaass aaata aabaa aabba