a-a aaa aad aae aao aap ad- ada add ade ado adp aea aed aee aeo aep aoa aod aoe aoo aop ap- apa apd ape apo app daa dad dae dao dap dda ddd dde ddo ddp de- dea ded dee deo dep doa dod doe doo dop dpa dpd dpe dpo dpp eaa ead eae eao eap ed- eda edd ede edo edp eea eed eee eeo eep eo- eoa eod eoe eoo eop ep- epa epd epe epo epp oaa oad oae oao oap oda odd ode odo odp oea oed oee oeo oep oo- ooa ood ooo oop op- opa opd ope opo opp p-p paa pad pae pao pap pda pdd pde pdo pdp pea ped pee peo pep poa pod poe poo pop ppa ppd ppe ppo ppp