eee eek eem ees eet eke eks ekt em- eme emk emm ems emt es- ese esk esm ess est ete etk etm ets ett k-t ke- kee kek kem kes ket kke kkk kkm kks kkt kme kmk kmm kms kmt kse ksk ksm kss kst kte ktk ktm kts ktt mee mek mem mes met mke mkk mkm mks mkt mme mmk mmm mms mmt mse msk msm mss mst mte mtk mtm mts mtt se- see sek sem ses set sk- ske skk skm sks skt sme smk smm sms smt ss- sse ssk ssm sss sst ste stk stm sts stt te- tee tek tem tes tet tke tkk tkm tks tkt tme tmk tmm tms tmt tse tsk tsm tss tst tte ttk ttm tts ttt