a-a a-t aaa aad aao aap aar aas aat aax ad- ada add ado adp adr ads adt adx aoa aod aoo aop aor aos aot aox ap- apa apd apo app apr aps apt apx ar- ara ard aro arp arr ars art arx as- asa asd aso asp asr ass ast asx at- ata atd ato atp atr ats att atx ax- axa axo axp axr axs axt axx daa dad dao dap dar das dat dax dda ddd ddo ddp ddr dds ddt ddx doa dod doo dop dor dos dot dox dpa dpd dpo dpp dpr dps dpt dra drd dro drp drr drs drt drx dsa dsd dso dsp dsr dss dst dsx dta dtd dto dtp dtr dts dtt dtx dxd dxo dxp dxr dxs dxt dxx oaa oad oao oap oar oas oat oax oda odd odo odp odr ods odt oo- ooa ood ooo oop oor oos oot oox op- opa opd opo opp opr ops opt opx or- ora ord oro orp orr ors ort orx os- osa osd oso osp osr oss ost osx ot- ota otd oto otp otr ots ott ox- oxa oxo oxt oxx p-p paa pad pao pap par pas pat pax pda pdd pdo pdp pdr pds pdt pdx poa pod poo pop por pos pot pox ppa ppd ppo ppp ppr pps ppt ppx pra prd pro prp prr prs prt prx ps- psa psd pso psp psr pss pst psx pt- pta ptd pto ptp ptr pts ptt ptx pxr pxs pxt ra- raa rad rao rap rar ras rat rax rda rdd rdo rdp rdr rds rdt rdx roa rod roo rop ror ros rot rox rpa rpd rpo rpp rpr rps rpt rpx rra rrd rrp rrr rrs rrt rsa rsd rso rsp rsr rss rst rsx rta rtd rto rtp rtr rts rtt rtx rxp rxr rxs saa sad sao sap sar sas sat sax sda sdd sdo sdp sdr sds sdt soa sod soo sop sor sos sot sox spa spd spo spp spr sps spt spx sr- sra srd sro srp srr srs srt srx ss- ssa ssd sso ssp ssr sss sst ssx sta std sto stp str sts stt stx sxs sxt t-x taa tad tao tap tar tas tat tax tda tdd tdo tdp tdr tds tdt tdx to- toa tod too top tor tos tot tox tpa tpd tpo tpp tpr tps tpt tpx tra trd tro trp trr trs trt trx tsa tsd tso tsp tsr tss tst tsx tta ttd tto ttp ttr tts ttt ttx txs txt xaa xad xap xar xas xat xda xdr xds xdt xoa xod xoo xop xor xos xot xox xpa xpd xpo xpp xps xpt xrd xrt xrx xsa xsp xss xst xtp xtr xts xtx xxo xxp xxx