ddd ddg ddo ddp dds dgd dgg dgp dgs dod dog doo dop dos dpd dpg dpo dpp dps dsd dsg dso dsp dss g-d g-p gdd gdo gdp gds ggd ggg ggo ggp ggs god gog goo gop gos gpd gpg gpo gpp gps gsd gsg gso gsp gss odd odg odo odp ods ogd ogg ogo ogp ogs oo- ood oog ooo oop oos op- opd opg opo opp ops os- osd osg oso osp oss p-p pdd pdg pdo pdp pds pgd pgg pgo pgp pgs pod pog poo pop pos ppd ppg ppo ppp pps ps- psd psg pso psp pss sdd sdg sdo sdp sds sgd sgg sgo sgp sgs sod sog soo sop sos spd spg spo spp sps ss- ssd ssg sso ssp sss