-er a-a a-b a-c aaa aab aac aae aag aar aas ab- aba abb abc abe abg abr abs ac- aca acb acc ace acg acr acs aea aeb aec aee aeg aer aes ag- aga agb agc age agg agr ags ar- ara arb arc are arg arr ars as- asa asb asc ase asg asr ass baa bab bac bae bag bar bas bba bbb bbc bbe bbg bbr bbs bca bcb bcc bce bcg bcr bcs be- bea beb bec bee beg ber bes bga bgb bgc bge bgg bgr bgs bra brb bre brg brr brs bsa bsb bsc bse bsg bsr bss c-- caa cab cac cae cag car cas cba cbb cbc cbe cbg cbr cbs cca ccb ccc cce ccg ccr ccs ce- cea ceb cec cee ceg cer ces cga cgb cgc cge cgg cgr cgs cra crb crc cre crg crr crs csa csb csc cse csg csr css eaa eab eac eae eag ear eas eba ebb ebc ebe ebg ebr ebs ec- eca ecb ecc ece ecg ecr ecs eea eeb eec eee eeg eer ees ega egb egc ege egg egr egs era erb erc ere erg err ers es- esa esb esc ese esg esr ess gaa gab gac gae gag gar gas gba gbc gbe gbg gbr gbs gca gcb gcc gce gcg gcr gcs ge- gea geb gec gee geg ger ges gga ggb ggc ggg ggr ggs gra grb grc gre grg grr grs gsa gsb gsc gse gsg gsr gss ra- raa rab rac rae rag rar ras rba rbb rbc rbe rbg rbr rbs rca rcb rcc rce rcg rcr rcs re- rea reb rec ree reg rer res rga rgb rgc rge rgg rgr rgs rra rrb rrc rrg rrr rrs rsa rsb rsc rse rsg rsr rss saa sab sac sae sag sar sas sba sbb sbc sbe sbg sbr sbs sca scb scc sce scg scr scs se- sea seb sec see seg ser ses sga sgb sgc sge sgg sgr sgs sr- sra srb src sre srg srr srs ss- ssa ssb ssc sse ssg ssr sss

-ase a-be aaaa aaab aaac aaae aaar aaas aaba aabb aabc aaca aacb aacc aace aacr aacs aaea aaec aaes aage aara aarc aare aars aasa aasc aase aass abaa abab abac abae abag abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcr abcs abec abee aber abes abra abrc abrs abs- absa abse abss acaa acab acac acae acag acar acas acba acca accc acce accs ace- acea acec acer aces acga acgr acgs acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeas aebs aecb aeer aega aer- aera aerc aers aesc aess agac agag agar agas agba agca agcc agce agea agee ager ages agga agge agra agre agsa agsg arab arac arae arag arar aras arba arbe arbs arc- arca arce arcs area arec aree areg ares arga argb arge args arr- arra arrc arre arrg arrr arrs ars- arsa arsc arse asaa asab asac asae asag asar asas asba asc- asca ascb ascc asce ascr asea asec asee aser ases asge asra asrc asrg asrs assa assc asse assr asss baaa baar baas baba babb babe babr babs bac- baca bacc bace bacs baer baes baga bage bagg bags bar- bara barb barc bare barg barr bars basa basc base bass bbas bbbb bbbs bbeb bbga bbrc bbrg bcaa bcar bcas bcbc bcbg bcbs bcca bccc bccs bcec bcer bces bcgs bcra bcrs bcsa bcsc bcss beag bear beas beba bebb bebe beca becs beeb beeg beer bees bega begg begs bera berc bere berg berr bers bes- besa bese bess bgca bggs brab brac brae brag bras brca brcb brce brea breb brec bree breg brer bres brrr brrs brsb brsr bsaa bsac bsas bscs bsea bseb bsec bsee bseg bser bses bsgs bsra bssc bsse caaa caab caac caas caba cabe cabg cabs cac- caca cacc cace cacr caec caer caes caga cage cagg cagr cags cara carb carc care carr cars casa casb casc case casr cass cbac cbar cbbc cbbs cbca cbcc cbce cbcr cbcs cbea cbec cbee cber cbga cbgb cbre cbsa cbsc cbse ccaa ccab ccac ccag ccar ccas ccba ccbc ccca cccb cccc cccs ccee ccga ccgc ccgs ccra ccrc ccre ccrg ccrs ccsa ccsg ccss ceac cear ceas ceba cebs cec- ceca cece cecs ceeb ceec cees cege cer- cera cerc cere cers cesa cesc cese cesg cesr cess cgac cgas cgcc cgcg cger cges cggs cgsb cgss crab crac crag crar cras crbc crca crcc crce crcr cre- crea creb crec cree creg cres crgs crsa crss csaa csab csac csar csas cscb cscc csce cscr cscs csea csec csee cser csra csrc csrs cssa csse cssr eaba eaca eacc eaec eaga eage eara earb eare ears easa ease ebac ebba ebbc ebbr ebbs ebcc eber ebes ebsa ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce eces ecgs ecra ecrc ecrr ecsa ecsc ecse ecss eeca eecs eeea eeee eees eega eegs eera eerc eerg eers eese egaa egae egar egas egba egbe egcc egcg egcr egea egec egee eger eggb egge eggs egra egre egsc egss eras erba erbb erbe erca ercc erce ereb erec erer eres erg- erga ergg ergs erra errc erre errs ersa erse esab esac esag esar esas esba esbs esca escb esce escr escs esea esee eser eses esra essa esse essg gaar gaas gaba gabb gabe gabr gabs gace gaea gaec gaer gaes gaga gage gagg gags gara garb gare garg garr gars gasa gasb gasc gase gasr gass gbag gbas gbbs gc-c gcaa gcbc gccc gccs gcrg gcse gcss geab gear geas geba gebe geca gece geer gees gege gegg gera gerb gere gers gesg gess gggg ggss grab grac grae gras grbr grcc grce grea greb grec gree greg gres grrr grrs grss gsab gsea gsse raab raag raas raba rabb rabe