a-a a-i aaa aad aai aao aap aax ad- ada add adi ado adp adx ai- aia aid aii aio aip aix aoa aod aoi aoo aop aox ap- apa apd api apo app apx ax- axa axi axo axp axx daa dad dai dao dap dax dda ddd ddi ddo ddp ddx di- dia did dii dio dip dix doa dod doi doo dop dox dpa dpd dpi dpo dpp dxd dxi dxo dxp dxx i-d ia- iaa iad iai iao iap ida idd idi ido idp idx iia iid iii iio iip iix io- ioa iod ioi ioo iop ipa ipd ipi ipo ipp ipx ixi o-i oaa oad oai oao oap oax oda odd odi odo odp oia oid oii oio oip oo- ooa ood ooi ooo oop oox op- opa opd opi opo opp opx ox- oxa oxi oxo oxx p-p paa pad pai pao pap pax pda pdd pdi pdo pdp pdx pia pid pii pio pip pix poa pod poi poo pop pox ppa ppd ppi ppo ppp ppx xaa xad xap xda xdi xia xii xio xix xoa xod xoi xoo xop xox xpa xpd xpo xpp xxi xxo xxp xxx