eee eek eem eep ees eie eii eik eim eip eis eke eki ekp eks em- eme emi emk emm emp ems ep- epe epi epm epp eps es- ese esi esk esm esp ess ie- iee iei iek iem iep ies iie iii iim iip iis ike iki ikk iks im- ime imi imm imp ims ipe ipi ipm ipp ips is- ise isi isk ism isp iss ke- kee kei kek kem kep kes kie kii kik kim kip kis kke kki kkk kkm kkp kks kme kmi kmk kmm kmp kms kpe kpi kpk kpm kpp kps kse ksi ksk ksm ksp kss mee mei mek mem mep mes mi- mie mii mik mim mip mis mke mkk mkm mkp mks mme mmi mmk mmm mmp mms mpe mpi mpk mpm mpp mps mse msi msk msm msp mss p-p pee pei pek pem pep pes pie pii pik pim pip pis pke pki pkm pkp pks pme pmi pmk pmm pmp pms ppe ppi ppk ppm ppp pps ps- pse psi psk psm psp pss se- see sei sek sem sep ses sie sii sik sim sip sis sk- ske ski skk skm skp sks sme smi smk smm smp sms spe spi spk spm spp sps ss- sse ssi ssk ssm ssp sss