ddd ddg ddo ddr dds dgd dgg dgr dgs dod dog doo dor dos drd drg dro drr drs dsd dsg dso dsr dss g-d gdd gdo gdr gds ggd ggg ggo ggr ggs god gog goo gor gos grd grg gro grr grs gsd gsg gso gsr gss odd odg odo odr ods ogd ogg ogo ogs oo- ood oog ooo oor oos or- ord org oro orr ors os- osd osg oso osr oss rdd rdg rdo rdr rds rgd rgg rgo rgr rgs rod rog roo ror ros rrd rrg rrr rrs rsd rsg rso rsr rss sdd sdg sdo sdr sds sgd sgg sgo sgr sgs sod sog soo sor sos sr- srd srg sro srr srs ss- ssd ssg sso ssr sss