-er -ic c-- ccc cce ccf cci ccm ccr ccs ce- cec cee cef cei cem cer ces cfc cfe cff cfi cfm cfr cfs ci- cic cie cif cii cim cir cis cmc cme cmf cmi cmm cmr cms crc cre crf cri crm crr crs csc cse csf csi csm csr css ec- ecc ece ecf eci ecm ecr ecs eec eee eef eem eer ees ef- efc efe eff efi efm efr efs eic eie eif eii eim eir eis em- emc eme emf emi emm emr ems erc ere erf eri erm err ers es- esc ese esf esi esm esr ess fcc fce fcf fci fcm fcr fcs fec fee fef fei fem fer fes ffc ffe fff ffi ffm ffr ffs fic fie fif fii fim fir fis fmc fme fmf fmi fmm fmr fms frc fre frf fri frm frr frs fsc fse fsf fsi fsm fsr fss i-f icc ice icf ici icm icr ics ie- iec iee ief iei iem ier ies ifc ife iff ifi ifm ifr ifs iic iie iif iii iim iir iis im- imc ime imf imi imm ims ir- irc ire irf iri irm irr irs is- isc ise isf isi ism isr iss m-f m-r mc- mcc mce mcf mci mcm mcr mcs mec mee mef mei mem mer mes mfc mfe mff mfi mfm mfr mfs mi- mic mie mif mii mim mir mis mmc mme mmf mmi mmm mmr mms mrc mre mrf mri mrm mrr mrs msc mse msf msi msm msr mss rcc rce rcf rci rcm rcr rcs re- rec ree ref rei rem rer res rfc rfe rff rfi rfm rfr rfs ric rie rif rii rim rir ris rmc rme rmf rmi rmm rmr rms rrc rrf rri rrm rrr rrs rsc rse rsf rsi rsm rsr rss scc sce scf sci scm scr scs se- sec see sef sei sem ser ses sfc sfe sff sfi sfm sfr sfs sic sie sif sii sim sir sis smc sme smf smi smm smr sms sr- src sre srf sri srm srr srs ss- ssc sse ssf ssi ssm ssr sss