-er a-a aaa aae aag aao aar aau aea aee aeg aeo aer aeu ag- aga age agg ago agr agu aoa aoe aog aoo aor aou ar- ara are arg aro arr aru au- aua aue aug auo aur eaa eae eag eao ear eau eea eee eeg eeo eer ega ege egg ego egr egu eo- eoa eoe eog eoo eor eou era ere erg ero err eru eu- eua eue eug eur gaa gae gag gao gar gau ge- gea gee geg geo ger geu gga ggg ggo ggr ggu goa goe gog goo gor gou gra gre grg gro grr gru gu- gua gue gug guo gur guu oaa oae oag oao oar oau oea oee oeg oeo oer oga oge ogg ogo oo- ooa oog ooo oor or- ora ore org oro orr oru ou- oua oue ouo our ra- raa rae rag rao rar rau re- rea ree reg reo rer reu rga rge rgg rgo rgr roa roe rog roo ror rou rra rrg rrr rru rua rue rug ruo rur ruu ua- uaa uae uag uao uar uau uea uee ueg uer uga uge ugg ugo ugr ugu uoa uoe uog uoo uor ur- ura ure urg uro urr uru uua uue uug uur uuu