-er a-a aaa aad aae aag aao aap aar ad- ada add ade adg ado adp adr aea aed aee aeg aeo aep aer ag- aga agd age agg ago agp agr aoa aod aoe aog aoo aop aor ap- apa apd ape apg apo app apr ar- ara ard are arg aro arp arr daa dad dae dag dao dap dar dda ddd dde ddg ddo ddp ddr de- dea ded dee deg deo dep der dga dgd dge dgg dgp dgr doa dod doe dog doo dop dor dpa dpd dpe dpg dpo dpp dpr dra drd dre drg dro drp drr eaa ead eae eag eao eap ear ed- eda edd ede edg edo edp edr eea eed eee eeg eeo eep eer ega egd ege egg ego egp egr eo- eoa eod eoe eog eoo eop eor ep- epa epd epe epg epo epp epr era erd ere erg ero erp err g-d g-p gaa gad gae gag gao gap gar gda gdd gde gdo gdp gdr ge- gea ged gee geg geo gep ger gga ggd ggg ggo ggp ggr goa god goe gog goo gop gor gpa gpd gpe gpg gpo gpp gpr gra grd gre grg gro grp grr oaa oad oae oag oao oap oar oda odd ode odg odo odp odr oea oed oee oeg oeo oep oer oga ogd oge ogg ogo ogp oo- ooa ood oog ooo oop oor op- opa opd ope opg opo opp opr or- ora ord ore org oro orp orr p-p paa pad pae pag pao pap par pda pdd pde pdg pdo pdp pdr pea ped pee peg peo pep per pga pgd pge pgg pgo pgp pgr poa pod poe pog poo pop por ppa ppd ppe ppg ppo ppp ppr pra prd pre prg pro prp prr ra- raa rad rae rag rao rap rar rda rdd rde rdg rdo rdp rdr re- rea red ree reg reo rep rer rga rgd rge rgg rgo rgp rgr roa rod roe rog roo rop ror rpa rpd rpe rpg rpo rpp rpr rra rrd rrg rrp rrr