-er a-a a-c aaa aac aad aae aam aap aar ac- aca acc acd ace acm acp acr ad- ada adc add ade adm adp adr aea aec aed aee aem aep aer ama amc amd ame amm amp amr ap- apa apc apd ape apm app apr ar- ara arc ard are arm arp arr c-- caa cac cad cae cam cap car cca ccc ccd cce ccm ccp ccr cda cdc cdd cde cdm cdp cdr ce- cea cec ced cee cem cep cer cma cmc cmd cme cmm cmp cmr cpa cpc cpd cpe cpm cpp cpr cra crc crd cre crm crp crr daa dac dad dae dam dap dar dca dcc dcd dce dcm dcp dcr dda ddc ddd dde ddm ddp ddr de- dea dec ded dee dem dep der dma dmc dmd dme dmm dmp dmr dpa dpc dpd dpe dpm dpp dpr dra drc drd dre drm drp drr eaa eac ead eae eam eap ear ec- eca ecc ecd ece ecm ecr ed- eda edc edd ede edm edp edr eea eec eed eee eem eep eer em- ema emc emd eme emm emp emr ep- epa epc epd epe epm epp epr era erc erd ere erm erp err m-r maa mac mad mae mam map mar mc- mca mcc mcd mce mcm mcp mcr mda mdc mdd mde mdm mdp mdr mea mec med mee mem mep mer mma mmc mmd mme mmm mmp mmr mpa mpc mpd mpe mpm mpp mpr mra mrc mrd mre mrm mrp mrr p-p paa pac pad pae pam pap par pca pcc pcd pce pcm pcp pcr pda pdc pdd pde pdm pdp pdr pea pec ped pee pem pep per pma pmc pmd pme pmm pmp pmr ppa ppc ppd ppe ppm ppp ppr pra prc prd pre prm prp prr ra- raa rac rad rae ram rap rar rca rcc rcd rce rcm rcp rcr rda rdc rdd rde rdm rdp rdr re- rea rec red ree rem rep rer rma rmc rmd rme rmm rmp rmr rpa rpc rpd rpe rpm rpp rpr rra rrc rrd rrm rrp rrr