a-a a-b a-c aaa aab aac aag aap aar aas ab- aba abb abc abg abp abr abs ac- aca acb acc acg acp acr acs ag- aga agb agc agg agp agr ags ap- apa apb apc apg app apr aps ar- ara arb arc arg arp arr ars as- asa asb asc asg asp asr ass b-p baa bab bac bag bap bar bas bba bbb bbc bbg bbp bbr bbs bca bcb bcc bcg bcp bcr bcs bga bgb bgc bgg bgp bgr bgs bpa bpb bpc bpg bpp bpr bps bra brb brg brp brr brs bsa bsb bsc bsg bsp bsr bss c-- caa cab cac cag cap car cas cba cbb cbc cbg cbp cbr cbs cca ccb ccc ccg ccp ccr ccs cga cgb cgc cgg cgp cgr cgs cpa cpb cpc cpg cpp cpr cps cra crb crc crg crp crr crs csa csb csc csg csp csr css g-p gaa gab gac gag gap gar gas gba gbc gbg gbp gbr gbs gca gcb gcc gcg gcp gcr gcs gga ggb ggc ggg ggp ggr ggs gpa gpb gpc gpg gpp gpr gps gra grb grc grg grp grr grs gsa gsb gsc gsg gsp gsr gss p-p paa pab pac pag pap par pas pba pbb pbc pbg pbp pbr pbs pca pcb pcc pcg pcp pcr pcs pga pgb pgc pgg pgp pgr pgs ppa ppb ppc ppg ppp ppr pps pra prb prc prg prp prr prs ps- psa psb psc psg psp psr pss ra- raa rab rac rag rap rar ras rba rbb rbc rbg rbp rbr rbs rca rcb rcc rcg rcp rcr rcs rga rgb rgc rgg rgp rgr rgs rpa rpb rpc rpg rpp rpr rps rra rrb rrc rrg rrp rrr rrs rsa rsb rsc rsg rsp rsr rss saa sab sac sag sap sar sas sba sbb sbc sbg sbp sbr sbs sca scb scc scg scp scr scs sga sgb sgc sgg sgp sgr sgs spa spb spc spg spp spr sps sr- sra srb src srg srp srr srs ss- ssa ssb ssc ssg ssp ssr sss

aaaa aaab aaac aaap aaar aaas aaba aabb aabc aabp aaca aacb aacc aacp aacr aacs aapa aapc aaps aara aarc aarp aars aasa aasc aass abaa abab abac abag abap abar abas abb- abba abbb abbr abbs abca abcb abcc abcp abcr abcs abpa abpc abpp abpr abps abra abrc abrs abs- absa absp abss acaa acab acac acag acap acar acas acba acca accc accp accs acga acgr acgs acpa acpr acps acr- acra acrc acrr acrs acsa acsc acss agac agag agap agar agas agba agca agcc agga agps agra agrp agsa agsg apac apap apar apas apba apbg apbr apbs apca apcb apcc apcr apcs apga appa appc appr apps apra aprc aprs apsa apss arab arac arag arap arar aras arba arbs arc- arca arcs arga argb args arpa arps arr- arra arrc arrg arrr arrs ars- arsa arsc asaa asab asac asag asap asar asas asba asc- asca ascb ascc ascp ascr asgp aspa aspc aspr asps asra asrc asrg asrs assa assc assp assr asss baaa baar baas baba babb babr babs bac- baca bacc bacs baga bagg bags bapa bapc bapp baps bar- bara barb barc barg barr bars basa basc bass bbas bbbb bbbs bbga bbpr bbrc bbrg bcaa bcap bcar bcas bcbc bcbg bcbp bcbs bcca bccc bccs bcgs bcpp bcps bcra bcrs bcsa bcsc bcss bgca bggs bpcp bprc bpsa brab brac brag bras brca brcb brrr brrs brsb brsr bsaa bsac bsap bsas bscp bscs bsgs bspp bspr bsra bssc caaa caab caac caap caas caba cabg cabs cac- caca cacc cacr caga cagg cagr cags capa capb capc capp caps cara carb carc carp carr cars casa casb casc casp casr cass cbac cbar cbbc cbbs cbca cbcc cbcp cbcr cbcs cbga cbgb cbpc cbpp cbsa cbsc ccaa ccab ccac ccag ccap ccar ccas ccba ccbc ccca cccb cccc cccp cccs ccga ccgc ccgs ccpa ccpp ccpr ccps ccra ccrc ccrg ccrp ccrs ccsa ccsg ccsp ccss cgac cgap cgas cgcc cgcg cggs cgsb cgss cpaa cpac cpag cpap cpas cpbc cpca cpcs cpga cpgb cppa cpps cprs cpsa cpsc cpsr crab crac crag crap crar cras crbc crca crcc crcr crgs crpc crps crsa crsp crss csaa csab csac csar csas cscb cscc cscr cscs cspa cspb cspc csps csra csrc csrs cssa cssr gaap gaar gaas gaba gabb gabp gabr gabs gaga gagg gags gapa gapp gaps gara garb garg garp garr gars gasa gasb gasc gasp gasr gass gbag gbap gbas gbbs gc-c gcaa gcap gcbc gccc gccs gcpc gcrg gcss gggg ggss gpaa gpac gpas gpca gpgp gpra gprp gprs gpsa gpsg gpss grab grac grap gras grbr grcc grpc grps grrr grrs grss gsab gscp gspc paag paap paar paas paba paca pacs paga pagb papa papb papg papp papr paps par- para parc parg parp parr pars pasa pasc pasp pass pbac pbar pbcc pbgc pbpa pbrs pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcgg pcgs pcpb pcpp pcps pcra pcrc pcsa pgaa pgas pgcc pgrc pgsa pgsc pgss ppac ppap ppar ppcc ppcs ppga pppa pppp ppps pprc ppss prag prar pras prbc prbs prca prcc prcp prcs prgs prps prrs prsa prsc prss psac psap psas psbr psca psga psgr pspp pspr psps psrp pssa pssc raab raag raas raba rabb rabs rac- raca racc racs raga ragg rags rapa rapc rapp raps rara rarb rars rasa rasc rasp rass rbbb rbbr rbbs rbsp rbss rcac rcas rcbc rccb rccc rccs rcga rcgc rcps rcrg rcsa rcsc rcss rgba rpca rpcs rpga rpgs rpps rras rrrr rrsp rsaa rscc rscs rsgb rsgc rspb rsps rssa sa-c saab saac saag saap saar saas saba sabb sabc sabr sabs saca sacc sacr sacs saga sagg sags sapa sapp saps sara sarc sarg sarp sarr sars sasa sasc sass sbaa