-er ddd dde ddg ddi ddk ddo ddr dds de- ded dee deg dei dek deo der des dev dgd dge dgg dgi dgk dgr dgs di- did die dig dii dik dio dir dis div dke dkg dki dkk dko dkr dks dod doe dog doi dok doo dor dos dov drd dre drg dri drk dro drr drs drv dsd dse dsg dsi dsk dso dsr dss dsv dvd dve dvg dvi dvk dvr dvs ed- edd ede edg edi edk edo edr eds eed eee eeg eek eeo eer ees eev egd ege egg egi ego egr egs eid eie eig eii eik eio eir eis eiv ekd eke ekg eki eko ekr eks ekv eo- eod eoe eog eoi eok eoo eor eos erd ere erg eri erk ero err ers erv es- esd ese esg esi esk eso esr ess esv evd eve evg evi evo evr evs evv g-d gdd gde gdi gdk gdo gdr gds gdv ge- ged gee geg gei gek geo ger ges gev ggd ggg ggi ggo ggr ggs ggv gid gie gig gii gik gio gir gis giv gkd gko gks god goe gog goi gok goo gor gos gov grd gre grg gri grk gro grr grs grv gsd gse gsg gsi gsk gso gsr gss gsv gvd gve gvg gvi gvk gvo gvr gvs i-d i-v idd ide idg idi idk ido idr ids idv ie- ied iee ieg iei iek ier ies iev igd ige igg igi igk igo igr igs iid iie iii iio iir iis ike iki ikk iko ikr iks ikv io- iod ioe iog ioi ioo ior ios iov ir- ird ire irg iri irk iro irr irs irv is- isd ise isg isi isk iso isr iss isv ivd ive ivg ivi ivo ivr ivs ivv kde kdg kdk kdo kdr kds ke- ked kee keg kei kek keo ker kes kev kgd kgi kgo kgs kgv kid kie kig kii kik kio kir kis kiv kke kki kkk kkr kks kkv kod koe kog koi kok koo kor kos krd krg kri krk kro krr krs krv ksd kse ksg ksi ksk kso ksr kss ksv kvi kvk kvo kvr kvs kvv o-i odd ode odg odi odo odr ods odv oed oee oeg oei oeo oer oes ogd oge ogg ogi ogo ogs oid oie oii oik oio oir ois oiv okd oke okg oki okk oko okr oks oo- ood oog ooi ook ooo oor oos oov or- ord ore org ori ork oro orr ors orv os- osd ose osg osi osk oso osr oss osv ov- ovd ove ovi ovo ovs ovv rdd rde rdg rdi rdo rdr rds rdv re- red ree reg rei rek reo rer res rev rgd rge rgg rgi rgk rgo rgr rgs rgv rid rie rig rii rik rio rir ris riv rke rkg rkk rko rks rkv rod roe rog roi rok roo ror ros rov rrd rrg rri rrk rrr rrs rsd rse rsg rsi rsk rso rsr rss rsv rvd rve rvg rvi rvo rvr rvs rvv sdd sde sdg sdi sdk sdo sdr sds sdv se- sed see seg sei sek seo ser ses sev sgd sge sgg sgi sgk sgo sgr sgs sgv sid sie sig sii sik sio sir sis siv sk- skd ske skg ski skk sko skr sks sod soe sog soi sok soo sor sos sov sr- srd sre srg sri srk sro srr srs srv ss- ssd sse ssg ssi ssk sso ssr sss ssv svd sve svg svi svk svo svr svs svv v-e vdd vde vdg vdi vdk vdo vdr vds vdv ved vee veg vei vek veo ver ves vgg vgo vgr vgs vi- vid vie vig vii vik vio vir vis viv vkg vod voe vog voi vok voo vor vos vov vrd vre vrg vri vrk vrr vrs vsd vse vsg vsi vsk vso vsr vss vsv vvg vvi vvo vvr vvs vvv