-er c-- c-j ccc cce ccj ccm ccr ccs ce- cec cee cej cem cer ces cjc cjr cjs cmc cme cmj cmm cmr cms crc cre crj crm crr crs csc cse csj csm csr css ec- ecc ece ecj ecm ecr ecs eec eee eem eer ees ejc em- emc eme emm emr ems erc ere erm err ers es- esc ese esm esr ess jcc jce jcm jcr jcs jec jee jej jem jer jes jjc jjj jjr jjs jmc jme jmj jmm jmr jms jrc jrm jrr jrs jsc jse jsj jsm jsr jss m-r mc- mcc mce mcm mcr mcs mec mee mej mem mer mes mjc mje mjj mjm mjr mjs mmc mme mmj mmm mmr mms mrc mre mrj mrm mrr mrs msc mse msj msm msr mss rcc rce rcj rcm rcr rcs re- rec ree rem rer res rjc rjm rjr rmc rme rmm rmr rms rrc rrm rrr rrs rsc rse rsj rsm rsr rss scc sce scj scm scr scs se- sec see sej sem ser ses sjc sje sjj sjm sjr sjs smc sme smm smr sms sr- src sre srj srm srr srs ss- ssc sse ssj ssm ssr sss