eee eek eem eep ees eet eke ekp eks ekt em- eme emk emm emp ems emt ep- epe epm epp eps ept es- ese esk esm esp ess est ete etk etm etp ets ett k-t ke- kee kek kem kep kes ket kke kkk kkm kkp kks kkt kme kmk kmm kmp kms kmt kpe kpk kpm kpp kps kpt kse ksk ksm ksp kss kst kte ktk ktm ktp kts ktt mee mek mem mep mes met mke mkk mkm mkp mks mkt mme mmk mmm mmp mms mmt mpe mpk mpm mpp mps mpt mse msk msm msp mss mst mte mtk mtm mtp mts mtt p-p pee pek pem pep pes pet pke pkm pkp pks pkt pme pmk pmm pmp pms pmt ppe ppk ppm ppp pps ppt ps- pse psk psm psp pss pst pt- pte ptk ptm ptp pts ptt se- see sek sem sep ses set sk- ske skk skm skp sks skt sme smk smm smp sms smt spe spk spm spp sps spt ss- sse ssk ssm ssp sss sst ste stk stm stp sts stt te- tee tek tem tep tes tet tke tkk tkm tkp tks tkt tme tmk tmm tmp tms tmt tpe tpk tpm tpp tps tpt tse tsk tsm tsp tss tst tte ttk ttm ttp tts ttt