-er a-a a-b a-c aaa aab aac aae aag aah aam aar aas ab- aba abb abc abe abg abh abm abr abs ac- aca acb acc ace acg ach acm acr acs aea aeb aec aee aeg aeh aem aer aes ag- aga agb agc age agg agh agm agr ags aha ahb ahc ahe ahg ahh ahm ahr ahs ama amb amc ame amg amh amm amr ams ar- ara arb arc are arg arh arm arr ars as- asa asb asc ase asg ash asm asr ass baa bab bac bae bag bah bam bar bas bba bbb bbc bbe bbg bbh bbm bbr bbs bca bcb bcc bce bcg bch bcm bcr bcs be- bea beb bec bee beg beh bem ber bes bga bgb bgc bge bgg bgh bgm bgr bgs bha bhb bhc bhe bhg bhh bhm bhr bhs bma bmb bmc bme bmg bmh bmm bmr bms bra brb bre brg brh brm brr brs bsa bsb bsc bse bsg bsh bsm bsr bss c-- caa cab cac cae cag cah cam car cas cba cbb cbc cbe cbg cbh cbm cbr cbs cca ccb ccc cce ccg cch ccm ccr ccs ce- cea ceb cec cee ceg ceh cem cer ces cga cgb cgc cge cgg cgh cgm cgr cgs ch- cha chb chc che chg chh chm chr chs cma cmb cmc cme cmg cmh cmm cmr cms cra crb crc cre crg crh crm crr crs csa csb csc cse csg csh csm csr css eaa eab eac eae eag eah eam ear eas eba ebb ebc ebe ebg ebh ebm ebr ebs ec- eca ecb ecc ece ecg ech ecm ecr ecs eea eeb eec eee eeg eem eer ees ega egb egc ege egg egh egm egr egs eha ehb ehc ehe ehg ehh ehm ehr ehs em- ema emb emc eme emg emh emm emr ems era erb erc ere erg erh erm err ers es- esa esb esc ese esg esh esm esr ess gaa gab gac gae gag gah gam gar gas gba gbc gbe gbg gbh gbm gbr gbs gca gcb gcc gce gcg gch gcm gcr gcs ge- gea geb gec gee geg geh gem ger ges gga ggb ggc ggg ggh ggm ggr ggs gha ghb ghc ghe ghg ghh ghr ghs gma gmb gmc gme gmg gmh gmm gmr gms gra grb grc gre grg grh grm grr grs gsa gsb gsc gse gsg gsm gsr gss haa hab hac hae hag hah ham har has hba hbb hbc hbe hbg hbh hbm hbr hbs hca hcb hcc hce hcg hch hcm hcr hcs he- hea heb hec hee heg heh hem her hes hga hgb hgc hge hgg hgh hgm hgr hgs hha hhb hhc hhe hhg hhh hhm hhr hhs hma hmb hmc hme hmg hmh hmm hmr hms hr- hra hrb hrc hre hrg hrh hrm hrr hrs hsa hsb hsc hse hsg hsh hsm hsr hss m-r maa mab mac mae mag mah mam mar mas mba mbb mbc mbe mbg mbh mbm mbr mbs mc- mca mcb mcc mce mcg mch mcm mcr mcs mea meb mec mee meg meh mem mer mes mga mgb mgc mge mgh mgm mgr mgs mha mhc mhg mhh mhm mhr mhs mma mmb mmc mme mmg mmh mmm mmr mms mra mrb mrc mre mrg mrh mrm mrr mrs msa msb msc mse msg msh msm msr mss ra- raa rab rac rae rag rah ram rar ras rba rbb rbc rbe rbg rbh rbm rbr rbs rca rcb rcc rce rcg rch rcm rcr rcs re- rea reb rec ree reg reh rem rer res rga rgb rgc rge rgg rgh rgr rgs rh- rha rhb rhc rhe rhg rhh rhm rhr rhs rma rmb rmc rme rmg rmh rmm rmr rms rra rrb rrc rrg rrh rrm rrr rrs rsa rsb rsc rse rsg rsh rsm rsr rss saa sab sac sae sag sah sam sar sas sba sbb sbc sbe sbg sbh sbm sbr sbs sca scb scc sce scg sch scm scr scs se- sea seb sec see seg seh sem ser ses sga sgb sgc sge sgg sgh sgm sgr sgs sh- sha shb shc she shg shh shm shr shs sma smb smc sme smg smh smm smr sms sr- sra srb src sre srg srh srm srr srs ss- ssa ssb ssc sse ssg ssh ssm ssr sss