eee eem een eep ees eev em- eme emm emn emp ems emv en- ene enm enn enp ens env ep- epe epm epn epp eps es- ese esm esn esp ess esv eve evm evn evp evs evv m-v mee mem men mep mes mev mme mmm mmn mmp mms mmv mne mnm mnn mnp mns mpe mpm mpn mpp mps mpv mse msm msn msp mss msv mve mvm mvn mvp mvs mvv ne- nee nem nen nep nes nev nme nmm nmn nmp nms nne nnm nnn nnp nns nnv npe npm npn npp nps npv nse nsm nsn nsp nss nsv nve nvm nvn nvp nvv p-p pee pem pen pep pes pev pme pmm pmn pmp pms pmv pn- pne pnm pnn pnp pns pnv ppe ppm ppn ppp pps ppv ps- pse psm psn psp pss psv pve pvm pvn pvp pvs pvv se- see sem sen sep ses sev sme smm smn smp sms smv sne snm snn snp sns snv spe spm spn spp sps spv ss- sse ssm ssn ssp sss ssv sve svm svn svp svs svv v-e vee vem ven vep ves vm- vmm vmn vn- vnm vnp vns vnv vpe vpm vpn vpp vps vse vsm vsn vsp vss vsv vvm vvs vvv