a-a aaa aad aae aao aap aax ad- ada add ade ado adp adx aea aed aee aeo aep aex aoa aod aoe aoo aop aox ap- apa apd ape apo app apx ax- axa axe axo axp axx daa dad dae dao dap dax dda ddd dde ddo ddp ddx de- dea ded dee deo dep dex doa dod doe doo dop dox dpa dpd dpe dpo dpp dxd dxo dxp dxx eaa ead eae eao eap eax ed- eda edd ede edo edp edx eea eed eee eeo eep eex eo- eoa eod eoe eoo eop ep- epa epd epe epo epp epx ex- exa exd exe exo exp exx oaa oad oae oao oap oax oda odd ode odo odp oea oed oee oeo oep oex oo- ooa ood ooo oop oox op- opa opd ope opo opp opx ox- oxa oxo oxx p-p paa pad pae pao pap pax pda pdd pde pdo pdp pdx pea ped pee peo pep pex poa pod poe poo pop pox ppa ppd ppe ppo ppp ppx pxe xaa xad xap xda xde xed xee xep xex xoa xod xoo xop xox xpa xpd xpe xpo xpp xxo xxp xxx