aaaa aaab aaac aaar aaas aaba aabb aabc aaca aacb aacc aacr aacs aara aarc aars aasa aasc aass abaa abab abac abag abar abas abb- abba abbb abbr abbs abca abcb abcc abcr abcs abra abrc abrs abs- absa abss acaa acab acac acag acar acas acba acca accc accs acga acgr acgs acr- acra acrc acrr acrs acsa acsc acss agac agag agar agas agba agca agcc agga agra agsa agsg arab arac arag arar aras arba arbs arc- arca arcs arga argb args arr- arra arrc arrg arrr arrs ars- arsa arsc asaa asab asac asag asar asas asba asc- asca ascb ascc ascr asra asrc asrg asrs assa assc assr asss baaa baar baas baba babb babr babs bac- baca bacc bacs baga bagg bags bar- bara barb barc barg barr bars basa basc bass bbas bbbb bbbs bbga bbrc bbrg bcaa bcar bcas bcbc bcbg bcbs bcca bccc bccs bcgs bcra bcrs bcsa bcsc bcss bgca bggs brab brac brag bras brca brcb brrr brrs brsb brsr bsaa bsac bsas bscs bsgs bsra bssc caaa caab caac caas caba cabg cabs cac- caca cacc cacr caga cagg cagr cags cara carb carc carr cars casa casb casc casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbga cbgb cbsa cbsc ccaa ccab ccac ccag ccar ccas ccba ccbc ccca cccb cccc cccs ccga ccgc ccgs ccra ccrc ccrg ccrs ccsa ccsg ccss cgac cgas cgcc cgcg cggs cgsb cgss crab crac crag crar cras crbc crca crcc crcr crgs crsa crss csaa csab csac csar csas cscb cscc cscr cscs csra csrc csrs cssa cssr gaar gaas gaba gabb gabr gabs gaga gagg gags gara garb garg garr gars gasa gasb gasc gasr gass gbag gbas gbbs gc-c gcaa gcbc gccc gccs gcrg gcss gggg ggss grab grac gras grbr grcc grrr grrs grss gsab raab raag raas raba rabb rabs rac- raca racc racs raga ragg rags rara rarb rars rasa rasc rass rbbb rbbr rbbs rbss rcac rcas rcbc rccb rccc rccs rcga rcgc rcrg rcsa rcsc rcss rgba rras rrrr rsaa rscc rscs rsgb rsgc rssa sa-c saab saac saag saar saas saba sabb sabc sabr sabs saca sacc sacr sacs saga sagg sags sara sarc sarg sarr sars sasa sasc sass sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scag scar scas scba sccc sccs scgs scr- scra scrc scrs scsa scsc scsr sgaa sgac sgca sgcb sgcg sggg sggs sgss sras srbc srcc srgb ssaa ssab ssac ssas ssbr ssca sscc sscs ssgs ssra ssrc ssrg ssrs sssa sssb sssc ssss