-er c-- ccc cce ccf ccn ccr ccs ccv ce- cec cee cef cen cer ces cev cfc cfe cff cfn cfr cfs cfv cn- cnc cne cnf cnn cnr cns cnv crc cre crf crn crr crs crv csc cse csf csn csr css csv cvc cve cvf cvn cvr cvs cvv ec- ecc ece ecf ecn ecr ecs ecv eec eee eef een eer ees eev ef- efc efe eff efr efs en- enc ene enf enn enr ens env erc ere erf ern err ers erv es- esc ese esf esn esr ess esv evc eve evf evn evr evs evv fcc fce fcf fcn fcr fcs fcv fec fee fef fen fer fes fev ffc ffe fff ffn ffr ffs ffv fnc fne fnf fnn fnr fns fnv frc fre frf frn frr frs fsc fse fsf fsn fsr fss fsv fvc ncc nce ncf ncn ncr ncs ncv ne- nec nee nef nen ner nes nev nfc nfe nff nfn nfr nfs nfv nnc nne nnf nnn nns nnv nrc nre nrf nrn nrr nrs nrv nsc nse nsf nsn nsr nss nsv nvc nve nvn nvv rcc rce rcf rcn rcr rcs rcv re- rec ree ref ren rer res rev rfc rfe rff rfn rfr rfs rfv rnc rnn rnr rns rnv rrc rrf rrn rrr rrs rsc rse rsf rsn rsr rss rsv rvc rve rvf rvn rvr rvs rvv scc sce scf scn scr scs scv se- sec see sef sen ser ses sev sfc sfe sff sfn sfr sfs sfv snc sne snf snn snr sns snv sr- src sre srf srn srr srs srv ss- ssc sse ssf ssn ssr sss ssv svc sve svf svn svr svs svv v-e vcc vce vcf vcn vcr vcs vec vee vef ven ver ves vfc vff vfn vfr vfs vfv vn- vnf vnr vns vnv vrc vre vrf vrn vrr vrs vsc vse vsf vsn vsr vss vsv vvc vvr vvs vvv