-er a-a a-b a-c aaa aab aac aae aag aam aar aas ab- aba abb abc abe abg abm abr abs ac- aca acb acc ace acg acm acr acs aea aeb aec aee aeg aem aer aes ag- aga agb agc age agg agm agr ags ama amb amc ame amg amm amr ams ar- ara arb arc are arg arm arr ars as- asa asb asc ase asg asm asr ass baa bab bac bae bag bam bar bas bba bbb bbc bbe bbg bbm bbr bbs bca bcb bcc bce bcg bcm bcr bcs be- bea beb bec bee beg bem ber bes bga bgb bgc bge bgg bgm bgr bgs bma bmb bmc bme bmg bmm bmr bms bra brb bre brg brm brr brs bsa bsb bsc bse bsg bsm bsr bss c-- caa cab cac cae cag cam car cas cba cbb cbc cbe cbg cbm cbr cbs cca ccb ccc cce ccg ccm ccr ccs ce- cea ceb cec cee ceg cem cer ces cga cgb cgc cge cgg cgm cgr cgs cma cmb cmc cme cmg cmm cmr cms cra crb crc cre crg crm crr crs csa csb csc cse csg csm csr css eaa eab eac eae eag eam ear eas eba ebb ebc ebe ebg ebm ebr ebs ec- eca ecb ecc ece ecg ecm ecr ecs eea eeb eec eee eeg eem eer ees ega egb egc ege egg egm egr egs em- ema emb emc eme emg emm emr ems era erb erc ere erg erm err ers es- esa esb esc ese esg esm esr ess gaa gab gac gae gag gam gar gas gba gbc gbe gbg gbm gbr gbs gca gcb gcc gce gcg gcm gcr gcs ge- gea geb gec gee geg gem ger ges gga ggb ggc ggg ggm ggr ggs gma gmb gmc gme gmg gmm gmr gms gra grb grc gre grg grm grr grs gsa gsb gsc gse gsg gsm gsr gss m-r maa mab mac mae mag mam mar mas mba mbb mbc mbe mbg mbm mbr mbs mc- mca mcb mcc mce mcg mcm mcr mcs mea meb mec mee meg mem mer mes mga mgb mgc mge mgm mgr mgs mma mmb mmc mme mmg mmm mmr mms mra mrb mrc mre mrg mrm mrr mrs msa msb msc mse msg msm msr mss ra- raa rab rac rae rag ram rar ras rba rbb rbc rbe rbg rbm rbr rbs rca rcb rcc rce rcg rcm rcr rcs re- rea reb rec ree reg rem rer res rga rgb rgc rge rgg rgr rgs rma rmb rmc rme rmg rmm rmr rms rra rrb rrc rrg rrm rrr rrs rsa rsb rsc rse rsg rsm rsr rss saa sab sac sae sag sam sar sas sba sbb sbc sbe sbg sbm sbr sbs sca scb scc sce scg scm scr scs se- sea seb sec see seg sem ser ses sga sgb sgc sge sgg sgm sgr sgs sma smb smc sme smg smm smr sms sr- sra srb src sre srg srm srr srs ss- ssa ssb ssc sse ssg 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 aage aama aamb aamc aame aamr aams aara aarc aare aarm aars aasa aasc aase aasm aass abaa abab abac abae abag 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 acag acar acas acba acca accc acce accm accs ace- acea acec acem acer aces acga acgr acgs acma acmc acme acmg acms acr- acra acrc acre acrm acrr acrs acsa acsc acse acsm acss aeac aeas aebs aecb aeer aega aer- aera aerc aers aesc aess agac agag agam agar agas agba agca agcc agce agea agee agem ager ages agga agge agma agmc agme agms agra agre agsa agsg agsm amaa amac amae amag amam amar amas amb- amba ambe ambr ambs amca amcc amcs amec amee amer ames amga amm- amma amme amra amrc amsa amsc amss arab arac arae arag aram arar aras arba arbe arbs arc- arca arce arcm arcs area arec aree areg arem ares arga argb arge args arma armc arme armm arms arr- arra arrc arre arrg arrr arrs ars- arsa arsc arse asaa asab asac asae asag asam asar asas asba asbm asc- asca ascb ascc asce ascr asea asec asee asem aser ases asge asma asme asmm asmr asms asra asrc asrg asrm asrs assa assc asse assr asss baaa baam baar baas baba babb babe babm babr babs bac- baca bacc bace bacs baer baes baga bage bagg bags bama bamb bamc bame bamm bams bar- bara barb barc bare barg barm barr bars basa basc base bass bbas bbbb bbbs bbcm bbeb bbga bbgm bbmg bbrc bbrg bcaa bcam bcar bcas bcbc bcbg bcbs bcca bccc bccm bccs bcec bcer bces bcgs bcma bcms bcra bcrs bcsa bcsc bcsm bcss beag beam bear beas beba bebb bebe beca becs beeb beeg beem beer bees bega begg begs bema beme bera berc bere berg berm berr bers bes- besa bese besm bess bgca bggs bmaa bmag bmce bmgs brab brac brae brag bram bras brca brcb brce brea breb brec bree breg brem brer bres brmc brrm brrr brrs brsb brsr bsaa bsac bsam bsas bscs bsea bseb bsec bsee bseg bser bses bsgs bsms bsra bsrm bssc bsse bssm caaa caab caac caam caas caba cabe cabg cabs cac- caca cacc cace cacm cacr caec caem caer caes caga cage cagg cagr cags 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 cbga cbgb cbme