-er a-a a-t aaa aad aae aap aar aas aat aax ad- ada add ade adp adr ads adt adx aea aed aee aep aer aes aet aex ap- apa apd ape app apr aps apt apx ar- ara ard are arp arr ars art arx as- asa asd ase asp asr ass ast asx at- ata atd ate atp atr ats att atx ax- axa axe axp axr axs axt axx daa dad dae dap dar das dat dax dda ddd dde ddp ddr dds ddt ddx de- dea ded dee dep der des det dex dpa dpd dpe dpp dpr dps dpt dra drd dre drp drr drs drt drx dsa dsd dse dsp dsr dss dst dsx dta dtd dte dtp dtr dts dtt dtx dxd dxp dxr dxs dxt dxx eaa ead eae eap ear eas eat eax ed- eda edd ede edp edr eds edt edx eea eed eee eep eer ees eet eex ep- epa epd epe epp epr eps ept epx era erd ere erp err ers ert es- esa esd ese esp esr ess est esx eta etd ete etp etr ets ett etx ex- exa exd exe exp exr exs ext exx p-p paa pad pae pap par pas pat pax pda pdd pde pdp pdr pds pdt pdx pea ped pee pep per pes pet pex ppa ppd ppe ppp ppr pps ppt ppx pra prd pre prp prr prs prt prx ps- psa psd pse psp psr pss pst psx pt- pta ptd pte ptp ptr pts ptt ptx pxe pxr pxs pxt ra- raa rad rae rap rar ras rat rax rda rdd rde rdp rdr rds rdt rdx re- rea red ree rep rer res ret rex rpa rpd rpe rpp rpr rps rpt rpx rra rrd rrp rrr rrs rrt rsa rsd rse rsp rsr rss rst rsx rta rtd rte rtp rtr rts rtt rtx rxp rxr rxs saa sad sae sap sar sas sat sax sda sdd sde sdp sdr sds sdt se- sea sed see sep ser ses set sex spa spd spe spp spr sps spt spx sr- sra srd sre srp srr srs srt srx ss- ssa ssd sse ssp ssr sss sst ssx sta std ste stp str sts stt stx sxs sxt t-x taa tad tae tap tar tas tat tax tda tdd tde tdp tdr tds tdt tdx te- tea ted tee tep ter tes tet tex tpa tpd tpe tpp tpr tps tpt tpx tra trd tre trp trr trs trt trx tsa tsd tse tsp tsr tss tst tsx tta ttd tte ttp ttr tts ttt ttx txe txs txt xaa xad xap xar xas xat xda xde xdr xds xdt xed xee xep xer xes xet xex xpa xpd xpe xpp xps xpt xrd xrt xrx xsa xsp xss xst xtp xtr xts xtx xxp xxx