-er a-a a-c aaa aac aae aaf aam aan aar aas ac- aca acc ace acf acm acn acr acs aea aec aee aef aem aen aer aes af- afa afc afe aff afm afn afr afs ama amc ame amf amm amn amr ams an- ana anc ane anf anm ann anr ans ar- ara arc are arf arm arn arr ars as- asa asc ase asf asm asn asr ass c-- caa cac cae caf cam can car cas cca ccc cce ccf ccm ccn ccr ccs ce- cea cec cee cef cem cen cer ces cfa cfc cfe cff cfm cfn cfr cfs cma cmc cme cmf cmm cmn cmr cms cn- cna cnc cne cnf cnm cnn cnr cns cra crc cre crf crm crn crr crs csa csc cse csf csm csn csr css eaa eac eae eaf eam ean ear eas ec- eca ecc ece ecf ecm ecn ecr ecs eea eec eee eef eem een eer ees ef- efa efc efe eff efm efr efs em- ema emc eme emf emm emn emr ems en- ena enc ene enf enm enn enr ens era erc ere erf erm ern err ers es- esa esc ese esf esm esn esr ess faa fac fae faf fam fan far fas fca fcc fce fcf fcm fcn fcr fcs fea fec fee fef fem fen fer fes ffa ffc ffe fff ffm ffn ffr ffs fma fmc fme fmf fmm fmn fmr fms fna fnc fne fnf fnm fnn fnr fns fra frc fre frf frm frn frr frs fsa fsc fse fsf fsm fsn fsr fss m-f m-r maa mac mae maf mam man mar mas mc- mca mcc mce mcf mcm mcn mcr mcs mea mec mee mef mem men mer mes mfa mfc mfe mff mfm mfn mfr mfs mma mmc mme mmf mmm mmn mmr mms mna mnc mne mnf mnm mnn mnr mns mra mrc mre mrf mrm mrn mrr mrs msa msc mse msf msm msn msr mss naa nac nae naf nam nan nar nas nca ncc nce ncf ncm ncn ncr ncs ne- nea nec nee nef nem nen ner nes nfa nfc nfe nff nfn nfr nfs nma nmc nme nmm nmn nmr nms nna nnc nne nnf nnm nnn nns nra nrc nre nrf nrm nrn nrr nrs nsa nsc nse nsf nsm nsn nsr nss ra- raa rac rae raf ram ran rar ras rca rcc rce rcf rcm rcn rcr rcs re- rea rec ree ref rem ren rer res rfa rfc rfe rff rfm rfn rfr rfs rma rmc rme rmf rmm rmn rmr rms rna rnc rnm rnn rnr rns rra rrc rrf rrm rrn rrr rrs rsa rsc rse rsf rsm rsn rsr rss saa sac sae saf sam san sar sas sca scc sce scf scm scn scr scs se- sea sec see sef sem sen ser ses sfa sfc sfe sff sfm sfn sfr sfs sma smc sme smf smm smn smr sms sna snc sne snf snm snn snr sns sr- sra src sre srf srm srn srr srs ss- ssa ssc sse ssf ssm ssn ssr sss