-er ddd dde ddh ddl ddp ddr dds ddx de- ded dee deh del dep der des dex dh- dhd dhe dhh dhl dhp dhr dhs dl- dld dle dlh dll dlp dlr dls dlx dpd dpe dph dpl dpp dpr dps drd dre drl drp drr drs drx dsd dse dsh dsl dsp dsr dss dsx dxd dxl dxp dxr dxs dxx ed- edd ede edh edl edp edr eds edx eed eee eel eep eer ees eex ehd ehe ehh ehl ehp ehr ehs eld ele elh ell elp elr els elx ep- epd epe eph epl epp epr eps epx erd ere erh erl erp err ers es- esd ese esh esl esp esr ess esx ex- exd exe exh exl exp exr exs exx hdd hde hdh hdl hdp hdr hds hdx he- hed hee heh hel hep her hes hex hhd hhe hhh hhl hhp hhr hhs hld hle hlh hll hlp hlr hls hlx hpd hpe hph hpl hpp hpr hps hr- hrd hre hrh hrl hrp hrr hrs hsd hse hsh hsl hsp hsr hss hsx hxd hxl l-p ldd lde ldh ldl ldp ldr lds led lee leh lel lep ler les lex lhd lhh lhp lhr lhs lhx lld lle lll llp llr lls lpd lpe lph lpl lpp lpr lps lpx lrd lrh lrp lrr lrs lsd lse lsh lsl lsp lsr lss lxd lxr lxx p-p pdd pde pdh pdl pdp pdr pds pdx ped pee peh pel pep per pes pex phd phe phl php phr phs phx pld ple plh pll plp plr pls plx ppd ppe pph ppl ppp ppr pps ppx prd pre prh prl prp prr prs prx ps- psd pse psh psl psp psr pss psx pxe pxl pxr pxs rdd rde rdh rdl rdp rdr rds rdx re- red ree reh rel rep rer res rex rh- rhd rhe rhh rhl rhp rhr rhs rld rle rlh rll rlp rlr rls rpd rpe rph rpl rpp rpr rps rpx rrd rrh rrl rrp rrr rrs rsd rse rsh rsl rsp rsr rss rsx rxp rxr rxs sdd sde sdh sdl sdp sdr sds se- sed see seh sel sep ser ses sex sh- shd she shh shl shp shr shs sld sle slh sll slp slr sls slx spd spe sph spl spp spr sps spx sr- srd sre srh srl srp srr srs srx ss- ssd sse ssh ssl ssp ssr sss ssx sxl sxs xde xdh xdr xds xed xee xel xep xer xes xex xhd xhp xld xlr xls xpd xpe xpl xpp xps xrd xrx xsl xsp xss xxl xxp xxx