-er c-- ccc cce ccm ccn cco ccp ccr ccs ce- cec cee cem cen ceo cep cer ces cmc cme cmm cmn cmo cmp cmr cms cn- cnc cne cnm cnn cno cnp cnr cns co- coc coe com con coo cop cor cos cpc cpe cpm cpn cpo cpp cpr cps crc cre crm crn cro crp crr crs csc cse csm csn cso csp csr css ec- ecc ece ecm ecn eco ecr ecs eec eee eem een eeo eep eer ees em- emc eme emm emn emo emp emr ems en- enc ene enm enn eno enp enr ens eo- eoc eoe eom eon eoo eop eor eos ep- epc epe epm epn epo epp epr eps erc ere erm ern ero erp err ers es- esc ese esm esn eso esp esr ess m-o m-r mc- mcc mce mcm mcn mco mcp mcr mcs mec mee mem men meo mep mer mes mmc mme mmm mmn mmo mmp mmr mms mnc mne mnm mnn mno mnp mnr mns moc moe mom mon moo mop mor mos mpc mpe mpm mpn mpo mpp mpr mps mrc mre mrm mrn mro mrp mrr mrs msc mse msm msn mso msp msr mss ncc nce ncm ncn nco ncp ncr ncs ne- nec nee nem nen neo nep ner nes nmc nme nmm nmn nmo nmp nmr nms nnc nne nnm nnn nno nnp nns no- noc noe nom non noo nop nor nos npc npe npm npn npo npp npr nps nrc nre nrm nrn nro nrp nrr nrs nsc nse nsm nsn nso nsp nsr nss oc- occ ocm ocn oco ocp ocr ocs oec oee oem oen oeo oep oer oes om- omc ome omm omn omo omp omr oms on- onc one onn ono onp onr ons oo- ooc oom oon ooo oop oor oos op- opc ope opm opn opo opp opr ops or- orc ore orm orn oro orp orr ors os- osc ose osm osn oso osp osr oss p-p pcc pce pcm pcn pco pcp pcr pcs pec pee pem pen peo pep per pes pmc pme pmm pmn pmo pmp pmr pms pn- pnc pne pnm pnn pno pnp pnr pns poc poe pom pon poo pop por pos ppc ppe ppm ppn ppo ppp ppr pps prc pre prm prn pro prp prr prs ps- psc pse psm psn pso psp psr pss rcc rce rcm rcn rco rcp rcr rcs re- rec ree rem ren reo rep rer res rmc rme rmm rmn rmo rmp rmr rms rnc rnm rnn rno rnp rnr rns roc roe rom ron roo rop ror ros rpc rpe rpm rpn rpo rpp rpr rps rrc rrm rrn rrp rrr rrs rsc rse rsm rsn rso rsp rsr rss scc sce scm scn sco scp scr scs se- sec see sem sen seo sep ser ses smc sme smm smn smo smp smr sms snc sne snm snn sno snp snr sns soc soe som son soo sop sor sos spc spe spm spn spo spp spr sps sr- src sre srm srn sro srp srr srs ss- ssc sse ssm ssn sso ssp ssr sss