ddd dde ddf ddg ddo ddp de- ded dee def deg deo dep dfd dfe dff dfg dfo dfp dgd dge dgf dgg dgp dod doe dof dog doo dop dpd dpe dpf dpg dpo dpp ed- edd ede edf edg edo edp eed eee eef eeg eeo eep ef- efd efe eff efg efo efp egd ege egf egg ego egp eo- eod eoe eof eog eoo eop ep- epd epe epf epg epo epp fdd fde fdf fdg fdo fdp fed fee fef feg feo fep ffd ffe fff ffg ffo ffp fgd fge fgf fgg fgp foe fof fog foo fop fpd fpe fpg fpo fpp g-d g-p gdd gde gdf gdo gdp ge- ged gee gef geg geo gep gfd gfe gff gfo gfp ggd ggg ggo ggp god goe gof gog goo gop gpd gpe gpf gpg gpo gpp odd ode odf odg odo odp oed oee oef oeg oeo oep of- ofd ofe off ofg ofo ofp ogd oge ogf ogg ogo ogp oo- ood oof oog ooo oop op- opd ope opf opg opo opp p-p pdd pde pdf pdg pdo pdp ped pee pef peg peo pep pfd pfe pff pfg pfo pfp pgd pge pgf pgg pgo pgp pod poe pof pog poo pop ppd ppe ppf ppg ppo ppp