a-a aaa aae aam aao aap aas aea aee aem aeo aep aes ama ame amm amo amp ams aoa aoe aom aoo aop aos ap- apa ape apm apo app aps as- asa ase asm aso asp ass eaa eae eam eao eap eas eea eee eem eeo eep ees em- ema eme emm emo emp ems eo- eoa eoe eom eoo eop eos ep- epa epe epm epo epp eps es- esa ese esm eso esp ess m-o maa mae mam mao map mas mea mee mem meo mep mes mma mme mmm mmo mmp mms moa moe mom moo mop mos mpa mpe mpm mpo mpp mps msa mse msm mso msp mss oaa oae oam oao oap oas oea oee oem oeo oep oes om- oma ome omm omo omp oms oo- ooa oom ooo oop oos op- opa ope opm opo opp ops os- osa ose osm oso osp oss p-p paa pae pam pao pap pas pea pee pem peo pep pes pma pme pmm pmo pmp pms poa poe pom poo pop pos ppa ppe ppm ppo ppp pps ps- psa pse psm pso psp pss saa sae sam sao sap sas se- sea see sem seo sep ses sma sme smm smo smp sms soa soe som soo sop sos spa spe spm spo spp sps ss- ssa sse ssm sso ssp sss