eee eem een eeo eep eet em- eme emm emn emo emp emt en- ene enm enn eno enp ent eo- eoe eom eon eoo eop eot ep- epe epm epn epo epp ept ete etm etn eto etp ett m-o mee mem men meo mep met mme mmm mmn mmo mmp mmt mne mnm mnn mno mnp mnt moe mom mon moo mop mot mpe mpm mpn mpo mpp mpt mte mtm mtn mto mtp mtt ne- nee nem nen neo nep net nme nmm nmn nmo nmp nmt nne nnm nnn nno nnp nnt no- noe nom non noo nop not npe npm npn npo npp npt nte ntm ntn nto ntp ntt oee oem oen oeo oep oet om- ome omm omn omo omp omt on- one onn ono onp ont oo- oom oon ooo oop oot op- ope opm opn opo opp opt ot- ote otm otn oto otp ott p-p pee pem pen peo pep pet pme pmm pmn pmo pmp pmt pn- pne pnm pnn pno pnp pnt poe pom pon poo pop pot ppe ppm ppn ppo ppp ppt pt- pte ptm ptn pto ptp ptt te- tee tem ten teo tep tet tme tmm tmn tmo tmp tmt tne tnm tnn tno tnp tnt to- toe tom ton too top tot tpe tpm tpn tpo tpp tpt tte ttm ttn tto ttp ttt