a-a a-t aaa aad aae aap aas aat aax ad- ada add ade adp ads adt adx aea aed aee aep aes aet aex ap- apa apd ape app aps apt apx as- asa asd ase asp ass ast asx at- ata atd ate atp ats att atx ax- axa axe axp axs axt axx daa dad dae dap das dat dax dda ddd dde ddp dds ddt ddx de- dea ded dee dep des det dex dpa dpd dpe dpp dps dpt dsa dsd dse dsp dss dst dsx dta dtd dte dtp dts dtt dtx dxd dxp dxs dxt dxx eaa ead eae eap eas eat eax ed- eda edd ede edp eds edt edx eea eed eee eep ees eet eex ep- epa epd epe epp eps ept epx es- esa esd ese esp ess est esx eta etd ete etp ets ett etx ex- exa exd exe exp exs ext exx p-p paa pad pae pap pas pat pax pda pdd pde pdp pds pdt pdx pea ped pee pep pes pet pex ppa ppd ppe ppp pps ppt ppx ps- psa psd pse psp pss pst psx pt- pta ptd pte ptp pts ptt ptx pxe pxs pxt saa sad sae sap sas sat sax sda sdd sde sdp sds sdt se- sea sed see sep ses set sex spa spd spe spp sps spt spx ss- ssa ssd sse ssp sss sst ssx sta std ste stp sts stt stx sxs sxt t-x taa tad tae tap tas tat tax tda tdd tde tdp tds tdt tdx te- tea ted tee tep tes tet tex tpa tpd tpe tpp tps tpt tpx tsa tsd tse tsp tss tst tsx tta ttd tte ttp tts ttt ttx txe txs txt xaa xad xap xas xat xda xde xds xdt xed xee xep xes xet xex xpa xpd xpe xpp xps xpt xsa xsp xss xst xtp xts xtx xxp xxx