-er a-a a-c aaa aac aad aae aag aam aar aas ac- aca acc acd ace acg acm acr acs ad- ada adc add ade adg adm adr ads aea aec aed aee aeg aem aer aes ag- aga agc agd age agg agm agr ags ama amc amd ame amg amm amr ams ar- ara arc ard are arg arm arr ars as- asa asc asd ase asg asm asr ass c-- caa cac cad cae cag cam car cas cca ccc ccd cce ccg ccm ccr ccs cda cdc cdd cde cdg cdm cdr cds ce- cea cec ced cee ceg cem cer ces cga cgc cgd cge cgg cgm cgr cgs cma cmc cmd cme cmg cmm cmr cms cra crc crd cre crg crm crr crs csa csc csd cse csg csm csr css daa dac dad dae dag dam dar das dca dcc dcd dce dcg dcm dcr dcs dda ddc ddd dde ddg ddm ddr dds de- dea dec ded dee deg dem der des dga dgc dgd dge dgg dgm dgr dgs dma dmc dmd dme dmg dmm dmr dms dra drc drd dre drg drm drr drs dsa dsc dsd dse dsg dsm dsr dss eaa eac ead eae eag eam ear eas ec- eca ecc ecd ece ecg ecm ecr ecs ed- eda edc edd ede edg edm edr eds eea eec eed eee eeg eem eer ees ega egc egd ege egg egm egr egs em- ema emc emd eme emg emm emr ems era erc erd ere erg erm err ers es- esa esc esd ese esg esm esr ess g-d gaa gac gad gae gag gam gar gas gca gcc gcd gce gcg gcm gcr gcs gda gdc gdd gde gdm gdr gds ge- gea gec ged gee geg gem ger ges gga ggc ggd ggg ggm ggr ggs gma gmc gmd gme gmg gmm gmr gms gra grc grd gre grg grm grr grs gsa gsc gsd gse gsg gsm gsr gss m-r maa mac mad mae mag mam mar mas mc- mca mcc mcd mce mcg mcm mcr mcs mda mdc mdd mde mdg mdm mdr mds mea mec med mee meg mem mer mes mga mgc mgd mge mgm mgr mgs mma mmc mmd mme mmg mmm mmr mms mra mrc mrd mre mrg mrm mrr mrs msa msc msd mse msg msm msr mss ra- raa rac rad rae rag ram rar ras rca rcc rcd rce rcg rcm rcr rcs rda rdc rdd rde rdg rdm rdr rds re- rea rec red ree reg rem rer res rga rgc rgd rge rgg rgr rgs rma rmc rmd rme rmg rmm rmr rms rra rrc rrd rrg rrm rrr rrs rsa rsc rsd rse rsg rsm rsr rss saa sac sad sae sag sam sar sas sca scc scd sce scg scm scr scs sda sdc sdd sde sdg sdm sdr sds se- sea sec sed see seg sem ser ses sga sgc sgd sge sgg sgm sgr sgs sma smc smd sme smg smm smr sms sr- sra src srd sre srg srm srr srs ss- ssa ssc ssd sse ssg ssm ssr sss