-er c-- ccc ccd cce ccm ccr ccs ccu cdc cdd cde cdm cdr cds cdu ce- cec ced cee cem cer ces ceu cmc cmd cme cmm cmr cms cmu crc crd cre crm crr crs cru csc csd cse csm csr css csu cuc cud cue cum cur cus cuu dcc dcd dce dcm dcr dcs dcu ddc ddd dde ddm ddr dds ddu de- dec ded dee dem der des deu dmc dmd dme dmm dmr dms dmu drc drd dre drm drr drs dru dsc dsd dse dsm dsr dss dsu duc dud due dum dur dus ec- ecc ecd ece ecm ecr ecs ecu ed- edc edd ede edm edr eds edu eec eed eee eem eer ees em- emc emd eme emm emr ems emu erc erd ere erm err ers eru es- esc esd ese esm esr ess esu eu- euc eud eue eur eus m-r mc- mcc mcd mce mcm mcr mcs mcu mdc mdd mde mdm mdr mds mdu mec med mee mem mer mes meu mmc mmd mme mmm mmr mms mmu mrc mrd mre mrm mrr mrs mru msc msd mse msm msr mss msu muc mud mue mum mur mus muu rcc rcd rce rcm rcr rcs rcu rdc rdd rde rdm rdr rds rdu re- rec red ree rem rer res reu rmc rmd rme rmm rmr rms rrc rrd rrm rrr rrs rru rsc rsd rse rsm rsr rss rsu ruc rud rue rum rur rus ruu scc scd sce scm scr scs scu sdc sdd sde sdm sdr sds sdu se- sec sed see sem ser ses seu smc smd sme smm smr sms smu sr- src srd sre srm srr srs ss- ssc ssd sse ssm ssr sss ssu suc sud sue sum sur sus suu ucc ucd uce ucm ucr ucs ucu udc udd ude udm udr uds udu uec ued uee uem uer ues um- umc umd ume umm umr ums umu ur- urc urd ure urm urr urs uru usc usd use usm usr uss usu uuc uue uum uur uus uuu