eee eem een eep ees eie eii eim ein eip eis em- eme emi emm emn emp ems en- ene eni enm enn enp ens ep- epe epi epm epn epp eps es- ese esi esm esn esp ess ie- iee iei iem ien iep ies iie iii iim iin iip iis im- ime imi imm imn imp ims in- ine ini inm inn inp ins ipe ipi ipm ipn ipp ips is- ise isi ism isn isp iss mee mei mem men mep mes mi- mie mii mim min mip mis mme mmi mmm mmn mmp mms mne mni mnm mnn mnp mns mpe mpi mpm mpn mpp mps mse msi msm msn msp mss n-i ne- nee nei nem nen nep nes nie nii nim nin nip nis nme nmi nmm nmn nmp nms nne nni nnm nnn nnp nns npe npi npm npn npp nps nse nsi nsm nsn nsp nss p-p pee pei pem pen pep pes pie pii pim pin pip pis pme pmi pmm pmn pmp pms pn- pne pni pnm pnn pnp pns ppe ppi ppm ppn ppp pps ps- pse psi psm psn psp pss se- see sei sem sen sep ses sie sii sim sin sip sis sme smi smm smn smp sms sne sni snm snn snp sns spe spi spm spn spp sps ss- sse ssi ssm ssn ssp sss