a-a a-t aaa aae aam aap aat aea aee aem aep aet ama ame amm amp amt ap- apa ape apm app apt at- ata ate atm atp att eaa eae eam eap eat eea eee eem eep eet em- ema eme emm emp emt ep- epa epe epm epp ept eta ete etm etp ett maa mae mam map mat mea mee mem mep met mma mme mmm mmp mmt mpa mpe mpm mpp mpt mta mte mtm mtp mtt p-p paa pae pam pap pat pea pee pem pep pet pma pme pmm pmp pmt ppa ppe ppm ppp ppt pt- pta pte ptm ptp ptt taa tae tam tap tat te- tea tee tem tep tet tma tme tmm tmp tmt tpa tpe tpm tpp tpt tta tte ttm ttp ttt