a-a aaa aae aao aap aas aea aee aeo aep aes aoa aoe aoo aop aos ap- apa ape apo app aps as- asa ase aso asp ass eaa eae eao eap eas eea eee eeo eep ees eo- eoa eoe eoo eop eos ep- epa epe epo epp eps es- esa ese eso esp ess oaa oae oao oap oas oea oee oeo oep oes oo- ooa ooo oop oos op- opa ope opo opp ops os- osa ose oso osp oss p-p paa pae pao pap pas pea pee peo pep pes poa poe poo pop pos ppa ppe ppo ppp pps ps- psa pse pso psp pss saa sae sao sap sas se- sea see seo sep ses soa soe soo sop sos spa spe spo spp sps ss- ssa sse sso ssp sss