-er c-- ccc cce ccf ccm ccn ccr ccs ce- cec cee cef cem cen cer ces cfc cfe cff cfm cfn cfr cfs cmc cme cmf cmm cmn cmr cms cn- cnc cne cnf cnm cnn cnr cns crc cre crf crm crn crr crs csc cse csf csm csn csr css ec- ecc ece ecf ecm ecn ecr ecs eec eee eef eem een eer ees ef- efc efe eff efm efr efs em- emc eme emf emm emn emr ems en- enc ene enf enm enn enr ens erc ere erf erm ern err ers es- esc ese esf esm esn esr ess fcc fce fcf fcm fcn fcr fcs fec fee fef fem fen fer fes ffc ffe fff ffm ffn ffr ffs fmc fme fmf fmm fmn fmr fms fnc fne fnf fnm fnn fnr fns frc fre frf frm frn frr frs fsc fse fsf fsm fsn fsr fss m-f m-r mc- mcc mce mcf mcm mcn mcr mcs mec mee mef mem men mer mes mfc mfe mff mfm mfn mfr mfs mmc mme mmf mmm mmn mmr mms mnc mne mnf mnm mnn mnr mns mrc mre mrf mrm mrn mrr mrs msc mse msf msm msn msr mss ncc nce ncf ncm ncn ncr ncs ne- nec nee nef nem nen ner nes nfc nfe nff nfn nfr nfs nmc nme nmm nmn nmr nms nnc nne nnf nnm nnn nns nrc nre nrf nrm nrn nrr nrs nsc nse nsf nsm nsn nsr nss rcc rce rcf rcm rcn rcr rcs re- rec ree ref rem ren rer res rfc rfe rff rfm rfn rfr rfs rmc rme rmf rmm rmn rmr rms rnc rnm rnn rnr rns rrc rrf rrm rrn rrr rrs rsc rse rsf rsm rsn rsr rss scc sce scf scm scn scr scs se- sec see sef sem sen ser ses sfc sfe sff sfm sfn sfr sfs smc sme smf smm smn smr sms snc sne snf snm snn snr sns sr- src sre srf srm srn srr srs ss- ssc sse ssf ssm ssn ssr sss