-er a-a a-c aaa aac aad aae aam aar aas ac- aca acc acd ace acm acr acs ad- ada adc add ade adm adr ads aea aec aed aee aem aer aes ama amc amd ame amm amr ams ar- ara arc ard are arm arr ars as- asa asc asd ase asm asr ass c-- caa cac cad cae cam car cas cca ccc ccd cce ccm ccr ccs cda cdc cdd cde cdm cdr cds ce- cea cec ced cee cem cer ces cma cmc cmd cme cmm cmr cms cra crc crd cre crm crr crs csa csc csd cse csm csr css daa dac dad dae dam dar das dca dcc dcd dce dcm dcr dcs dda ddc ddd dde ddm ddr dds de- dea dec ded dee dem der des dma dmc dmd dme dmm dmr dms dra drc drd dre drm drr drs dsa dsc dsd dse dsm dsr dss eaa eac ead eae eam ear eas ec- eca ecc ecd ece ecm ecr ecs ed- eda edc edd ede edm edr eds eea eec eed eee eem eer ees em- ema emc emd eme emm emr ems era erc erd ere erm err ers es- esa esc esd ese esm esr ess m-r maa mac mad mae mam mar mas mc- mca mcc mcd mce mcm mcr mcs mda mdc mdd mde mdm mdr mds mea mec med mee mem mer mes mma mmc mmd mme mmm mmr mms mra mrc mrd mre mrm mrr mrs msa msc msd mse msm msr mss ra- raa rac rad rae ram rar ras rca rcc rcd rce rcm rcr rcs rda rdc rdd rde rdm rdr rds re- rea rec red ree rem rer res rma rmc rmd rme rmm rmr rms rra rrc rrd rrm rrr rrs rsa rsc rsd rse rsm rsr rss saa sac sad sae sam sar sas sca scc scd sce scm scr scs sda sdc sdd sde sdm sdr sds se- sea sec sed see sem ser ses sma smc smd sme smm smr sms sr- sra src srd sre srm srr srs ss- ssa ssc ssd sse ssm ssr sss