a-a a-b a-t aaa aab aag aao aar aas aat ab- aba abb abg abo abr abs abt ag- aga agb agg ago agr ags agt aoa aob aog aoo aor aos aot ar- ara arb arg aro arr ars art as- asa asb asg aso asr ass ast at- ata atb atg ato atr ats att baa bab bag bao bar bas bat bba bbb bbg bbo bbr bbs bbt bga bgb bgg bgo bgr bgs bgt boa bob bog boo bor bos bot bra brb brg bro brr brs brt bsa bsb bsg bso bsr bss bst bta btb btg bto btr bts btt gaa gab gag gao gar gas gat gba gbg gbo gbr gbs gbt gga ggb ggg ggo ggr ggs ggt goa gob gog goo gor gos got gra grb grg gro grr grs grt gsa gsb gsg gso gsr gss gst gta gtb gtg gto gtr gts gtt oaa oab oag oao oar oas oat ob- oba obb obg obo obr obs obt oga ogg ogo ogs ogt oo- ooa oob oog ooo oor oos oot or- ora orb org oro orr ors ort os- osa osb osg oso osr oss ost ot- ota otb otg oto otr ots ott ra- raa rab rag rao rar ras rat rba rbb rbg rbo rbr rbs rbt rga rgb rgg rgo rgr rgs rgt roa rob rog roo ror ros rot rra rrb rrg rrr rrs rrt rsa rsb rsg rso rsr rss rst rta rtb rtg rto rtr rts rtt saa sab sag sao sar sas sat sba sbb sbg sbo sbr sbs sbt sga sgb sgg sgo sgr sgs sgt soa sob sog soo sor sos sot sr- sra srb srg sro srr srs srt ss- ssa ssb ssg sso ssr sss sst sta stb stg sto str sts stt taa tab tag tao tar tas tat tba tbb tbg tbo tbr tbs tbt tga tgb tgg tgo tgr tgs tgt to- toa tob tog too tor tos tot tra trb trg tro trr trs trt tsa tsb tsg tso tsr tss tst tta ttb ttg tto ttr tts ttt

aaaa aaab aaar aaas aaba aabb aabt aaoo aara aaro aars aart aasa aass aast aata aatt abaa abab abag abar abas abat abb- abba abbb abbo abbr abbs abbt aboa abob aboo abor abos abot abra abro abrs abs- absa abss abta abts ag-o agag agao agar agas agat agba agbo agga agob agog agoo agos agot agra agro agsa agsg agst agta agtr agts aoba aora aorb aors aort aoss arab arag arar aras arat arba arbs arga argb argo args aroa arob aroo aror aros arr- arra arrg arro arrr arrs arrt ars- arsa arso arst arta arto artr arts asaa asab asag asao asar asas asat asba asbo asgt asob asog asor asos asot asra asrg asro asrs assa asso assr asss asst asta astb asto astr asts at-t ataa atab atar atas atat atbs atgo atob ator atos atot atra atro atsb atst atta atto attr atts baaa baar baas baat baba babb babo babr babs baga bagg bago bags bagt baos bar- bara barb barg baro barr bars bart basa baso bass bast bata bato bats batt bbas bbbb bbbs bbga bbrg bggs bgst boab boag boar boas boat boba bobb bobo bobs boga bogg bogo bogs bogt boob boog boor boos boot bor- bora borg boro borr bors bort bosa boso boss bost bota botb boto bots bott brab brag brao bras brat broa brob brog broo bror bros brot brrr brrs brsb brsr brst bsaa bsas bsat bsgs bsos bsra bsts btaa btob btor btrt btss bttb gaar gaas gaba gabb gabo gabr gabs gabt gaga gagg gago gags gaos gara garb garg garo garr gars gart gasa gasb gaso gasr gass gast gata gato gatr gats gatt gbag gbas gbbo gbbs ggbt gggg ggss goar goas goat goba gobo gobs goga gogo gogs goog goor goos goot gora gorb gorg goro gorr gors gort goso goss gost gota goto gots gott grab gras grat grbr grob grog groo gror gros grot grrr grrs grss gsab gsat gsos gstr gtaa gtbr gtos gtta oara oars oass oast oats obas obba obbo obor obos obot obra obro obsr obss obst obts ogar ogb ogba ogoa ogog ogra ogro ooaa ooba oooo ooos oora oort oosa oost ootb oots orab orao orar oras orat orba orbb orbo orbs orga orgo orgs oro- oror oros orot orra orro orrs orsa orso orta orto orts osag osar osas osat osba osoo osor osos osro ossa ossb osso osta ostr osts otar otas otbs oto- otog otoo otor otos otra otro otrs otsa otsg otso otta otto otts raab raag raas raat raba rabb rabo rabs raga ragg rago rags raob raos rara rarb raro rars rasa raso rass rast rata rato rats ratt rbbb rbbr rbbs rbss rbst rgba rgtr rgts roab roag roar roas roat rob- roba robb robo robs robt roga rogg rogo roob roog roor roos root rora roro rort rosa roso ross rost rota rotg roto rotr rots rott rras rrat rrrr rsaa rsgb rsos rssa rsts rtas rtgs rtss rtts s-os saab saag saar saas saat saba sabb sabo sabr sabs saga sagg sago sags sagt saor saos sara sarg saro sarr sars sart sasa saso sass sast sata satb satg sato satr sats satt sbaa sbar sbas sbbs sbor sbot sbsa sbst sgaa sggg sggs sgro sgss sgta sgts soar soas soat soba sobo sobr sobs sobt soga sogo sogs soog soor soos soot sora sorb sorg soro sorr sors sort sosa soso soss sost sota soto sots sras srgb sros srta srtr ssaa ssab ssao ssas ssat ssbr ssgs ssgt ssot ssra ssrg ssrs sssa sssb ssss ssta sstb ssts stab stag star stas stat stbs stgr stoa stob stog stoo stor stos stot stra stro strs stss sttr taa- taag taar taas taat taba tabb tabo tabs taga tagg tago tags taoa