-er a-a aaa aad aae aag aao aar ad- ada add ade adg ado adr aea aed aee aeg aeo aer ag- aga agd age agg ago agr aoa aod aoe aog aoo aor ar- ara ard are arg aro arr daa dad dae dag dao dar dda ddd dde ddg ddo ddr de- dea ded dee deg deo der dga dgd dge dgg dgr doa dod doe dog doo dor dra drd dre drg dro drr eaa ead eae eag eao ear ed- eda edd ede edg edo edr eea eed eee eeg eeo eer ega egd ege egg ego egr eo- eoa eod eoe eog eoo eor era erd ere erg ero err g-d gaa gad gae gag gao gar gda gdd gde gdo gdr ge- gea ged gee geg geo ger gga ggd ggg ggo ggr goa god goe gog goo gor gra grd gre grg gro grr oaa oad oae oag oao oar oda odd ode odg odo odr oea oed oee oeg oeo oer oga ogd oge ogg ogo oo- ooa ood oog ooo oor or- ora ord ore org oro orr ra- raa rad rae rag rao rar rda rdd rde rdg rdo rdr re- rea red ree reg reo rer rga rgd rge rgg rgo rgr roa rod roe rog roo ror rra rrd rrg rrr