-er a-a aaa aae aag aao aar aea aee aeg aeo aer ag- aga age agg ago agr aoa aoe aog aoo aor ar- ara are arg aro arr eaa eae eag eao ear eea eee eeg eeo eer ega ege egg ego egr eo- eoa eoe eog eoo eor era ere erg ero err gaa gae gag gao gar ge- gea gee geg geo ger gga ggg ggo ggr goa goe gog goo gor gra gre grg gro grr oaa oae oag oao oar oea oee oeg oeo oer oga oge ogg ogo oo- ooa oog ooo oor or- ora ore org oro orr ra- raa rae rag rao rar re- rea ree reg reo rer rga rge rgg rgo rgr roa roe rog roo ror rra rrg rrr