-er ddd dde ddf ddh ddo ddr dds ddx de- ded dee def deh deo der des dex dfd dfe dff dfh dfo dfr dfs dfx dh- dhd dhe dhf dhh dho dhr dhs dod doe dof doh doo dor dos dox drd dre dro drr drs drx dsd dse dsf dsh dso dsr dss dsx dxd dxo dxr dxs dxx ed- edd ede edf edh edo edr eds edx eed eee eef eeo eer ees eex ef- efd efe eff efh efo efr efs efx ehd ehe ehf ehh eho ehr ehs eo- eod eoe eof eoh eoo eor eos erd ere erf erh ero err ers es- esd ese esf esh eso esr ess esx ex- exd exe exh exo exr exs exx fdd fde fdf fdh fdo fdr fds fdx fed fee fef feh feo fer fes fex ffd ffe fff ffh ffo ffr ffs ffx fhe fhf fhh fho fhr fhs foe fof foh foo for fos fox frd fre frf frh fro frr frs fsd fse fsf fsh fso fsr fss fsx fxe fxr fxs fxx hdd hde hdf hdh hdo hdr hds hdx he- hed hee hef heh heo her hes hex hfd hfe hff hfh hfo hfr hfs hhd hhe hhf hhh hho hhr hhs hod hoe hof hoh hoo hor hos hox hr- hrd hre hrf hrh hro hrr hrs hsd hse hsf hsh hsr hss hsx hxd odd ode odf odh odo odr ods oed oee oef oeh oeo oer oes oex of- ofd ofe off ofo ofr ofs ofx ohd ohe ohf ohh oho ohr ohs oo- ood oof ooh ooo oor oos oox or- ord ore orf orh oro orr ors orx os- osd ose osf osh oso osr oss osx ox- oxf oxo oxx rdd rde rdf rdh rdo rdr rds rdx re- red ree ref reh reo rer res rex rfd rfe rff rfh rfo rfr rfs rh- rhd rhe rhf rhh rho rhr rhs rod roe rof roh roo ror ros rox rrd rrf rrh rrr rrs rsd rse rsf rsh rso rsr rss rsx rxr rxs sdd sde sdf sdh sdo sdr sds se- sed see sef seh seo ser ses sex sfd sfe sff sfh sfo sfr sfs sfx sh- shd she shf shh sho shr shs sod soe sof soh soo sor sos sox sr- srd sre srf srh sro srr srs srx ss- ssd sse ssf ssh sso ssr sss ssx sxs xde xdf xdh xdr xds xed xee xer xes xex xfe xfh xfs xfx xhd xod xof xoo xor xos xox xrd xrf xrx xss xxo xxx