a-a a-b aaa aab aaf aag aao aar aas ab- aba abb abf abg abo abr abs af- afa afb aff afg afo afr afs ag- aga agb agf agg ago agr ags aoa aob aof aog aoo aor aos ar- ara arb arf arg aro arr ars as- asa asb asf asg aso asr ass baa bab baf bag bao bar bas bba bbb bbf bbg bbo bbr bbs bfa bfb bff bfg bfo bfr bfs bga bgb bgf bgg bgo bgr bgs boa bob bof bog boo bor bos bra brb brf brg bro brr brs bsa bsb bsf bsg bso bsr bss faa fab faf fag fao far fas fba fbb fbf fbg fbo fbr fbs ffa fff ffg ffo ffr ffs fga fgb fgf fgg fgr fgs foa fob fof fog foo for fos fra frb frf frg fro frr frs fsa fsb fsf fsg fso fsr fss gaa gab gaf gag gao gar gas gba gbf gbg gbo gbr gbs gfa gfb gff gfo gfr gfs gga ggb ggg ggo ggr ggs goa gob gof gog goo gor gos gra grb grf grg gro grr grs gsa gsb gsf gsg gso gsr gss oaa oab oaf oag oao oar oas ob- oba obb obf obg obo obr obs of- ofa ofb off ofg ofo ofr ofs oga ogf ogg ogo ogs oo- ooa oob oof oog ooo oor oos or- ora orb orf org oro orr ors os- osa osb osf osg oso osr oss ra- raa rab raf rag rao rar ras rba rbb rbf rbg rbo rbr rbs rfa rfb rff rfg rfo rfr rfs rga rgb rgf rgg rgo rgr rgs roa rob rof rog roo ror ros rra rrb rrf rrg rrr rrs rsa rsb rsf rsg rso rsr rss saa sab saf sag sao sar sas sba sbb sbf sbg sbo sbr sbs sfa sfb sff sfg sfo sfr sfs sga sgb sgf sgg sgo sgr sgs soa sob sof sog soo sor sos sr- sra srb srf srg sro srr srs ss- ssa ssb ssf ssg sso ssr sss

aaaa aaab aaaf aaar aaas aaba aabb aafa aafb aaff aaoo aara aaro aars aasa aasf aass abaa abab abaf abag abar abas abb- abba abbb abbo abbr abbs abff aboa abob abof aboo abor abos abra abro abrs abs- absa absf abss afaa afao afar afbs affa affo affs afgf afoa afog afoo afor afr- afra afro afrs afsa afsb ag-o agag agao agar agas agba agbo agfa agga agob agog agoo agos agra agro agsa agsg aoba aora aorb aors aoss arab araf arag arar aras arba arbs arfa arfb arff arfs arga argb argo args aroa arob aroo aror aros arr- arra arrg arro arrr arrs ars- arsa arso asaa asab asaf asag asao asar asas asba asbo asfa asob asof asog asor asos asra asrg asro asrs assa asso assr asss baaa baaf baar baas baba babb babo babr babs baff bafo baga bagg bago bags baos bar- bara barb barf barg baro barr bars basa basf baso bass bbas bbbb bbbs bbga bbrg bfas bffs bfgf bfsr bggs boab boag boar boas boba bobb bobo bobs bofa boff bofs boga bogg bogo bogs boob boof boog boor boos bor- bora borf borg boro borr bors bosa boso boss brab braf brag brao bras broa brob brog broo bror bros brrr brrs brsb brsr bsaa bsas bsfa bsff bsfs bsgs bsos bsra faaa faas faba fabo fabs fafa faff fafg fafo fagg fago fags fara farb farg faro farr fars fasa faso fass fbar fbrs ffar ffff ffrr ffsa ffss foaf foar foba fobs fofo fogg fogo fogs foof foos for- fora forb forg foro forr fors fosa fosb foso foss frab frag fras frob frog fros frsb frso fsas fsfo fsgs fsra fssa fssf gaar gaas gaba gabb gabo gabr gabs gafa gafb gaff gaga gagg gago gags gaos gara garb garf garg garo garr gars gasa gasb gaso gasr gass gbag gbas gbbo gbbs gffa gfoa gfor ggfg gggg ggss goaf goar goas goba gobo gobs goff gofr goga gogo gogs goof goog goor goos gora gorb gorf gorg goro gorr gors goso goss grab graf gras grbr grfa grob grof grog groo gror gros grrr grrs grss gsab gsos oafo oafs oara oars oass obas obba obbo obor obos obra obro obsr obss ofas off- offa offo offr offs ofgo ofor ofra ogar ogb ogba ogfr ogoa ogog ogra ogro ooaa ooba ooff oofs oooo ooos oora oosa orab orao orar oras orba orbb orbo orbs orff orfs orga orgo orgs oro- orof oror oros orra orro orrs orsa orso osaf osag osar osas osba osfa osoo osor osos osro ossa ossb osso raab raaf raag raas raba rabb rabo rabs rafa raff raga ragg rago rags raob raos rara rarb rarf raro rars rasa raso rass rbaf rbbb rbbr rbbs rbss rfgs rgba roab roaf roag roar roas rob- roba robb robo robs roff rofo roga rogg rogo roob roof roog roor roos rora roro rosa roso ross rras rrrr rsaa rsaf rsgb rsos rssa s-os saab saaf saag saar saas saba sabb sabo sabr sabs safa safb saff safo safr saga sagg sago sags saor saos sara sarf sarg saro sarr sars sasa sasf saso sass sbaa sbar sbas sbbs sbor sbsa sfar sfas sfba sfog sfor sfos sfra sfro sfss sgaa sggg sggs sgro sgss soar soas soba sobo sobr sobs sofa sofo soga sogo sogs soof soog soor soos sora sorb sorg soro sorr sors sosa soso soss sraf sras srgb sros ssaa ssab ssao ssas ssbr ssgs ssra ssrg ssrs sssa sssb sssf ssss

-aaa- aaaas aaarg aaasa aaass aabaa aabba aabfs aabga aabra aasra abaab ababa ababs abaga abago abara abasa abass abbar abbas abbos abbrs abfab abffs abgar aboab abobo abora aboso abrar abras absar afara afars affor afgar afoss afro- afrob afrog afros afsar agafa agago agara agaro agars agbor aggag aggar aggro agogo agoof