-er ddd dde ddf ddg ddn ddo ddr dds de- ded dee def deg den deo der des dfd dfe dff dfg dfn dfo dfr dfs dgd dge dgf dgg dgn dgr dgs dnd dne dnf dng dnn dno dnr dns dod doe dof dog don doo dor dos drd dre drg drn dro drr drs dsd dse dsf dsg dsn dso dsr dss ed- edd ede edf edg edn edo edr eds eed eee eef eeg een eeo eer ees ef- efd efe eff efg efo efr efs egd ege egf egg egn ego egr egs en- end ene enf eng enn eno enr ens eo- eod eoe eof eog eon eoo eor eos erd ere erf erg ern ero err ers es- esd ese esf esg esn eso esr ess fdd fde fdf fdg fdn fdo fdr fds fed fee fef feg fen feo fer fes ffd ffe fff ffg ffn ffo ffr ffs fgd fge fgf fgg fgn fgr fgs fnd fne fnf fng fnn fnr fns foe fof fog fon foo for fos frd fre frf frg frn fro frr frs fsd fse fsf fsg fsn fso fsr fss g-d gdd gde gdf gdn gdo gdr gds ge- ged gee gef geg gen geo ger ges gfd gfe gff gfo gfr gfs ggd ggg ggn ggo ggr ggs gnd gne gnf gnn gno gnr gns god goe gof gog gon goo gor gos grd gre grf grg grn gro grr grs gsd gse gsf gsg gsn gso gsr gss ndd nde ndf ndg ndn ndo ndr nds ne- ned nee nef neg nen neo ner nes nfd nfe nff nfn nfo nfr nfs ngd nge ngf ngg ngn ngo ngs nne nnf nng nnn nno nns no- nod noe nof nog non noo nor nos nrd nre nrf nrg nrn nro nrr nrs nsd nse nsf nsg nsn nso nsr nss odd ode odf odg odn odo odr ods oed oee oef oeg oen oeo oer oes of- ofd ofe off ofg ofn ofo ofr ofs ogd oge ogf ogg ogn ogo ogs on- ond one onf ong onn ono onr ons oo- ood oof oog oon ooo oor oos or- ord ore orf org orn oro orr ors os- osd ose osf osg osn oso osr oss rdd rde rdf rdg rdn rdo rdr rds re- red ree ref reg ren reo rer res rfd rfe rff rfg rfn rfo rfr rfs rgd rge rgf rgg rgn rgo rgr rgs rnd rng rnn rno rnr rns rod roe rof rog ron roo ror ros rrd rrf rrg rrn rrr rrs rsd rse rsf rsg rsn rso rsr rss sdd sde sdf sdg sdn sdo sdr sds se- sed see sef seg sen seo ser ses sfd sfe sff sfg sfn sfo sfr sfs sgd sge sgf sgg sgn sgo sgr sgs snd sne snf sng snn sno snr sns sod soe sof sog son soo sor sos sr- srd sre srf srg srn sro srr srs ss- ssd sse ssf ssg ssn sso ssr sss