a-a a-i aaa aad aai aao aap aar aax ad- ada add adi ado adp adr adx ai- aia aid aii aio aip air aix aoa aod aoi aoo aop aor aox ap- apa apd api apo app apr apx ar- ara ard ari aro arp arr arx ax- axa axi axo axp axr axx daa dad dai dao dap dar dax dda ddd ddi ddo ddp ddr ddx di- dia did dii dio dip dir dix doa dod doi doo dop dor dox dpa dpd dpi dpo dpp dpr dra drd dri dro drp drr drx dxd dxi dxo dxp dxr dxx i-d ia- iaa iad iai iao iap iar ida idd idi ido idp idr idx iia iid iii iio iip iir iix io- ioa iod ioi ioo iop ior ipa ipd ipi ipo ipp ipr ipx ir- ira ird iri iro irp irr irx ixi o-i oaa oad oai oao oap oar oax oda odd odi odo odp odr oia oid oii oio oip oir oo- ooa ood ooi ooo oop oor oox op- opa opd opi opo opp opr opx or- ora ord ori oro orp orr orx ox- oxa oxi oxo oxx p-p paa pad pai pao pap par pax pda pdd pdi pdo pdp pdr pdx pia pid pii pio pip pir pix poa pod poi poo pop por pox ppa ppd ppi ppo ppp ppr ppx pra prd pri pro prp prr prx pxr ra- raa rad rai rao rap rar rax rda rdd rdi rdo rdp rdr rdx ria rid rii rio rip rir rix roa rod roi roo rop ror rox rpa rpd rpi rpo rpp rpr rpx rra rrd rri rrp rrr rxp rxr xaa xad xap xar xda xdi xdr xia xii xio xix xoa xod xoi xoo xop xor xox xpa xpd xpo xpp xrd xrx xxi xxo xxp xxx