-er a-a a-c aaa aac aae aam aan aap aar aas ac- aca acc ace acm acn acp acr acs aea aec aee aem aen aep aer aes ama amc ame amm amn amp amr ams an- ana anc ane anm ann anp anr ans ap- apa apc ape apm apn app apr aps ar- ara arc are arm arn arp arr ars as- asa asc ase asm asn asp asr ass c-- caa cac cae cam can cap car cas cca ccc cce ccm ccn ccp ccr ccs ce- cea cec cee cem cen cep cer ces cma cmc cme cmm cmn cmp cmr cms cn- cna cnc cne cnm cnn cnp cnr cns cpa cpc cpe cpm cpn cpp cpr cps cra crc cre crm crn crp crr crs csa csc cse csm csn csp csr css eaa eac eae eam ean eap ear eas ec- eca ecc ece ecm ecn ecr ecs eea eec eee eem een eep eer ees em- ema emc eme emm emn emp emr ems en- ena enc ene enm enn enp enr ens ep- epa epc epe epm epn epp epr eps era erc ere erm ern erp err ers es- esa esc ese esm esn esp esr ess m-r maa mac mae mam man map mar mas mc- mca mcc mce mcm mcn mcp mcr mcs mea mec mee mem men mep mer mes mma mmc mme mmm mmn mmp mmr mms mna mnc mne mnm mnn mnp mnr mns mpa mpc mpe mpm mpn mpp mpr mps mra mrc mre mrm mrn mrp mrr mrs msa msc mse msm msn msp msr mss naa nac nae nam nan nap nar nas nca ncc nce ncm ncn ncp ncr ncs ne- nea nec nee nem nen nep ner nes nma nmc nme nmm nmn nmp nmr nms nna nnc nne nnm nnn nnp nns npa npc npe npm npn npp npr nps nra nrc nre nrm nrn nrp nrr nrs nsa nsc nse nsm nsn nsp nsr nss p-p paa pac pae pam pan pap par pas pca pcc pce pcm pcn pcp pcr pcs pea pec pee pem pen pep per pes pma pmc pme pmm pmn pmp pmr pms pn- pna pnc pne pnm pnn pnp pnr pns ppa ppc ppe ppm ppn ppp ppr pps pra prc pre prm prn prp prr prs ps- psa psc pse psm psn psp psr pss ra- raa rac rae ram ran rap rar ras rca rcc rce rcm rcn rcp rcr rcs re- rea rec ree rem ren rep rer res rma rmc rme rmm rmn rmp rmr rms rna rnc rnm rnn rnp rnr rns rpa rpc rpe rpm rpn rpp rpr rps rra rrc rrm rrn rrp rrr rrs rsa rsc rse rsm rsn rsp rsr rss saa sac sae sam san sap sar sas sca scc sce scm scn scp scr scs se- sea sec see sem sen sep ser ses sma smc sme smm smn smp smr sms sna snc sne snm snn snp snr sns spa spc spe spm spn spp spr sps sr- sra src sre srm srn srp srr srs ss- ssa ssc sse ssm ssn ssp ssr sss