a-a a-i aaa aad aai aao aap aar aas aax ad- ada add adi ado adp adr ads adx ai- aia aid aii aio aip air ais aix aoa aod aoi aoo aop aor aos aox ap- apa apd api apo app apr aps apx ar- ara ard ari aro arp arr ars arx as- asa asd asi aso asp asr ass asx ax- axa axi axo axp axr axs axx daa dad dai dao dap dar das dax dda ddd ddi ddo ddp ddr dds ddx di- dia did dii dio dip dir dis dix doa dod doi doo dop dor dos dox dpa dpd dpi dpo dpp dpr dps dra drd dri dro drp drr drs drx dsa dsd dsi dso dsp dsr dss dsx dxd dxi dxo dxp dxr dxs dxx i-d ia- iaa iad iai iao iap iar ias ida idd idi ido idp idr ids idx iia iid iii iio iip iir iis iix io- ioa iod ioi ioo iop ior ios ipa ipd ipi ipo ipp ipr ips ipx ir- ira ird iri iro irp irr irs irx is- isa isd isi iso isp isr iss ixi o-i oaa oad oai oao oap oar oas oax oda odd odi odo odp odr ods oia oid oii oio oip oir ois oo- ooa ood ooi ooo oop oor oos oox op- opa opd opi opo opp opr ops opx or- ora ord ori oro orp orr ors orx os- osa osd osi oso osp osr oss osx ox- oxa oxi oxo oxx p-p paa pad pai pao pap par pas pax pda pdd pdi pdo pdp pdr pds pdx pia pid pii pio pip pir pis pix poa pod poi poo pop por pos pox ppa ppd ppi ppo ppp ppr pps ppx pra prd pri pro prp prr prs prx ps- psa psd psi pso psp psr pss psx pxr pxs ra- raa rad rai rao rap rar ras rax rda rdd rdi rdo rdp rdr rds rdx ria rid rii rio rip rir ris rix roa rod roi roo rop ror ros rox rpa rpd rpi rpo rpp rpr rps rpx rra rrd rri rrp rrr rrs rsa rsd rsi rso rsp rsr rss rsx rxp rxr rxs saa sad sai sao sap sar sas sax sda sdd sdi sdo sdp sdr sds sia sid sii sio sip sir sis six soa sod soi soo sop sor sos sox spa spd spi spo spp spr sps spx sr- sra srd sri sro srp srr srs srx ss- ssa ssd ssi sso ssp ssr sss ssx sxi sxs xaa xad xap xar xas xda xdi xdr xds xia xii xio xis xix xoa xod xoi xoo xop xor xos xox xpa xpd xpo xpp xps xrd xrx xsa xsi xsp xss xxi xxo xxp xxx