a-a aaa aae aam aao aap aea aee aem aeo aep ama ame amm amo amp aoa aoe aom aoo aop ap- apa ape apm apo app eaa eae eam eao eap eea eee eem eeo eep em- ema eme emm emo emp eo- eoa eoe eom eoo eop ep- epa epe epm epo epp m-o maa mae mam mao map mea mee mem meo mep mma mme mmm mmo mmp moa moe mom moo mop mpa mpe mpm mpo mpp oaa oae oam oao oap oea oee oem oeo oep om- oma ome omm omo omp oo- ooa oom ooo oop op- opa ope opm opo opp p-p paa pae pam pao pap pea pee pem peo pep pma pme pmm pmo pmp poa poe pom poo pop ppa ppe ppm ppo ppp