-er ddd dde ddg ddk ddn ddo ddr dds de- ded dee deg dek den deo der des dgd dge dgg dgk dgn dgr dgs dke dkg dkk dko dkr dks dnd dne dng dnk dnn dno dnr dns dod doe dog dok don doo dor dos drd dre drg drk drn dro drr drs dsd dse dsg dsk dsn dso dsr dss ed- edd ede edg edk edn edo edr eds eed eee eeg eek een eeo eer ees egd ege egg egn ego egr egs ekd eke ekg eko ekr eks en- end ene eng enk enn eno enr ens eo- eod eoe eog eok eon eoo eor eos erd ere erg erk ern ero err ers es- esd ese esg esk esn eso esr ess g-d gdd gde gdk gdn gdo gdr gds ge- ged gee geg gek gen geo ger ges ggd ggg ggn ggo ggr ggs gkd gkn gko gks gnd gne gnn gno gnr gns god goe gog gok gon goo gor gos grd gre grg grk grn gro grr grs gsd gse gsg gsk gsn gso gsr gss kde kdg kdk kdo kdr kds ke- ked kee keg kek ken keo ker kes kgd kgo kgs kke kkk kkn kkr kks kn- knd kne kng knk knn kno knr kod koe kog kok kon koo kor kos krd krg krk krn kro krr krs ksd kse ksg ksk ksn kso ksr kss ndd nde ndg ndk ndn ndo ndr nds ne- ned nee neg nek nen neo ner nes ngd nge ngg ngk ngn ngo ngs nke nkk nkn nko nkr nks nne nng nnk nnn nno nns no- nod noe nog nok non noo nor nos nrd nre nrg nrk nrn nro nrr nrs nsd nse nsg nsk nsn nso nsr nss odd ode odg odn odo odr ods oed oee oeg oen oeo oer oes ogd oge ogg ogn ogo ogs okd oke okg okk oko okr oks on- ond one ong onk onn ono onr ons oo- ood oog ook oon ooo oor oos or- ord ore org ork orn oro orr ors os- osd ose osg osk osn oso osr oss rdd rde rdg rdn rdo rdr rds re- red ree reg rek ren reo rer res rgd rge rgg rgk rgn rgo rgr rgs rke rkg rkk rko rks rnd rng rnn rno rnr rns rod roe rog rok ron roo ror ros rrd rrg rrk rrn rrr rrs rsd rse rsg rsk rsn rso rsr rss sdd sde sdg sdk sdn sdo sdr sds se- sed see seg sek sen seo ser ses sgd sge sgg sgk sgn sgo sgr sgs sk- skd ske skg skk sko skr sks snd sne sng snk snn sno snr sns sod soe sog sok son soo sor sos sr- srd sre srg srk srn sro srr srs ss- ssd sse ssg ssk ssn sso ssr sss