-er ddd dde ddg ddi ddk ddn ddr dds de- ded dee deg dei dek den der des dgd dge dgg dgi dgk dgn dgr dgs di- did die dig dii dik din dir dis dke dkg dki dkk dkr dks dnd dne dng dni dnk dnn dnr dns drd dre drg dri drk drn drr drs dsd dse dsg dsi dsk dsn dsr dss ed- edd ede edg edi edk edn edr eds eed eee eeg eek een eer ees egd ege egg egi egn egr egs eid eie eig eii eik ein eir eis ekd eke ekg eki ekr eks en- end ene eng eni enk enn enr ens erd ere erg eri erk ern err ers es- esd ese esg esi esk esn esr ess g-d gdd gde gdi gdk gdn gdr gds ge- ged gee geg gei gek gen ger ges ggd ggg ggi ggn ggr ggs gid gie gig gii gik gin gir gis gkd gkn gks gnd gne gni gnn gnr gns grd gre grg gri grk grn grr grs gsd gse gsg gsi gsk gsn gsr gss i-d idd ide idg idi idk idn idr ids ie- ied iee ieg iei iek ien ier ies igd ige igg igi igk ign igr igs iid iie iii iin iir iis ike iki ikk ikr iks in- ind ine ing ini ink inn inr ins ir- ird ire irg iri irk irn irr irs is- isd ise isg isi isk isn isr iss kde kdg kdk kdr kds ke- ked kee keg kei kek ken ker kes kgd kgi kgs kid kie kig kii kik kin kir kis kke kki kkk kkn kkr kks kn- knd kne kng kni knk knn knr krd krg kri krk krn krr krs ksd kse ksg ksi ksk ksn ksr kss n-i ndd nde ndg ndi ndk ndn ndr nds ne- ned nee neg nei nek nen ner nes ngd nge ngg ngi ngk ngn ngs nid nie nig nii nik nin nir nis nke nki nkk nkn nkr nks nne nng nni nnk nnn nns nrd nre nrg nri nrk nrn nrr nrs nsd nse nsg nsi nsk nsn nsr nss rdd rde rdg rdi rdn rdr rds re- red ree reg rei rek ren rer res rgd rge rgg rgi rgk rgn rgr rgs rid rie rig rii rik rin rir ris rke rkg rkk rks rnd rng rni rnn rnr rns rrd rrg rri rrk rrn rrr rrs rsd rse rsg rsi rsk rsn rsr rss sdd sde sdg sdi sdk sdn sdr sds se- sed see seg sei sek sen ser ses sgd sge sgg sgi sgk sgn sgr sgs sid sie sig sii sik sin sir sis sk- skd ske skg ski skk skr sks snd sne sng sni snk snn snr sns sr- srd sre srg sri srk srn srr srs ss- ssd sse ssg ssi ssk ssn ssr sss