-er a-a a-b a-c aaa aab aac aae aam aar aas ab- aba abb abc abe abm abr abs ac- aca acb acc ace acm acr acs aea aeb aec aee aem aer aes ama amb amc ame amm amr ams ar- ara arb arc are arm arr ars as- asa asb asc ase asm asr ass baa bab bac bae bam bar bas bba bbb bbc bbe bbm bbr bbs bca bcb bcc bce bcm bcr bcs be- bea beb bec bee bem ber bes bma bmb bmc bme bmm bmr bms bra brb bre brm brr brs bsa bsb bsc bse bsm bsr bss c-- caa cab cac cae cam car cas cba cbb cbc cbe cbm cbr cbs cca ccb ccc cce ccm ccr ccs ce- cea ceb cec cee cem cer ces cma cmb cmc cme cmm cmr cms cra crb crc cre crm crr crs csa csb csc cse csm csr css eaa eab eac eae eam ear eas eba ebb ebc ebe ebm ebr ebs ec- eca ecb ecc ece ecm ecr ecs eea eeb eec eee eem eer ees em- ema emb emc eme emm emr ems era erb erc ere erm err ers es- esa esb esc ese esm esr ess m-r maa mab mac mae mam mar mas mba mbb mbc mbe mbm mbr mbs mc- mca mcb mcc mce mcm mcr mcs mea meb mec mee mem mer mes mma mmb mmc mme mmm mmr mms mra mrb mrc mre mrm mrr mrs msa msb msc mse msm msr mss ra- raa rab rac rae ram rar ras rba rbb rbc rbe rbm rbr rbs rca rcb rcc rce rcm rcr rcs re- rea reb rec ree rem rer res rma rmb rmc rme rmm rmr rms rra rrb rrc rrm rrr rrs rsa rsb rsc rse rsm rsr rss saa sab sac sae sam sar sas sba sbb sbc sbe sbm sbr sbs sca scb scc sce scm scr scs se- sea seb sec see sem ser ses sma smb smc sme smm smr sms sr- sra srb src sre srm srr srs ss- ssa ssb ssc sse ssm ssr sss

-ase a-be aaaa aaab aaac aaae aaam aaar aaas aaba aabb aabc aabm aaca aacb aacc aace aacm aacr aacs aaea aaec aaem aaes aama aamb aamc aame aamr aams aara aarc aare aarm aars aasa aasc aase aasm aass abaa abab abac abae abam abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcr abcs abec abee aber abes abma abmb abmc abms abra abrc abrs abs- absa abse abss acaa acab acac acae acar acas acba acca accc acce accm accs ace- acea acec acem acer aces acma acmc acme acms acr- acra acrc acre acrm acrr acrs acsa acsc acse acsm acss aeac aeas aebs aecb aeer aer- aera aerc aers aesc aess amaa amac amae amam amar amas amb- amba ambe ambr ambs amca amcc amcs amec amee amer ames amm- amma amme amra amrc amsa amsc amss arab arac arae aram arar aras arba arbe arbs arc- arca arce arcm arcs area arec aree arem ares arma armc arme armm arms arr- arra arrc arre arrr arrs ars- arsa arsc arse asaa asab asac asae asam asar asas asba asbm asc- asca ascb ascc asce ascr asea asec asee asem aser ases asma asme asmm asmr asms asra asrc asrm asrs assa assc asse assr asss baaa baam baar baas baba babb babe babm babr babs bac- baca bacc bace bacs baer baes bama bamb bamc bame bamm bams bar- bara barb barc bare barm barr bars basa basc base bass bbas bbbb bbbs bbcm bbeb bbrc bcaa bcam bcar bcas bcbc bcbs bcca bccc bccm bccs bcec bcer bces bcma bcms bcra bcrs bcsa bcsc bcsm bcss beam bear beas beba bebb bebe beca becs beeb beem beer bees bema beme bera berc bere berm berr bers bes- besa bese besm bess bmaa bmce brab brac brae bram bras brca brcb brce brea breb brec bree brem brer bres brmc brrm brrr brrs brsb brsr bsaa bsac bsam bsas bscs bsea bseb bsec bsee bser bses bsms bsra bsrm bssc bsse bssm caaa caab caac caam caas caba cabe cabs cac- caca cacc cace cacm cacr caec caem caer caes cama camb camc came camm cams cara carb carc care carm carr cars casa casb casc case casm casr cass cbac cbar cbbc cbbs cbca cbcc cbce cbcm cbcr cbcs cbea cbec cbee cber cbme cbms cbre cbrm cbsa cbsc cbse cbsm ccaa ccab ccac ccam ccar ccas ccba ccbc ccca cccb cccc cccm cccs ccee ccma ccmb ccmc ccmm ccms ccra ccrc ccre ccrs ccsa ccss ceac cear ceas ceba cebs cec- ceca cece cecm cecs ceeb ceec ceem cees cema cemb ceme cemm cemr cems cer- cera cerc cere cers cesa cesc cese cesr cess cmaa cmac cmas cmba cmbc cmbs cmcc cmcs cmea cmec cmes cmmb cmmc cmms cmra cmrr cmrs cmsa cmsc cmse crab crac cram crar cras crbc crca crcc crce crcr cre- crea creb crec cree crem cres crmb crms crsa crss csaa csab csac csar csas csbm cscb cscc csce cscr cscs csea csec csee csem cser csma csmc csra csrc csrs cssa csse cssm cssr eaba eaca eacc eaec eama eame eams eara earb eare ears easa ease ebac ebam ebba ebbc ebbr ebbs ebcc eber ebes ebsa ecaa ecac ecam ecar ecbc ecbe ecca eccb eccc ecce eccm ecem eces ecma ecra ecrc ecrm ecrr ecsa ecsc ecse ecss eeca eecs eeea eeee eees eems eera eerc eers eese emac emae emam emar emas emba embe embr embs emcc emcs emer emes emma emme emms emra emre emrs emsa emse eram eras erba erbb erbe erca ercc erce ereb erec erem erer eres erma ermc erme erms erra errc erre errs ersa erse esab esac esam esar esas esba esbs esca escb esce escm escr escs esea esee esem eser eses