-er a-a aaa aae aag aak aao aar aav aea aee aeg aek aeo aer aev ag- aga age agg agk ago agr agv aka ake akg akk ako akr akv aoa aoe aog aok aoo aor aov ar- ara are arg ark aro arr arv av- ava ave avg avk avo avr eaa eae eag eak eao ear eav eea eee eeg eek eeo eer eev ega ege egg ego egr eka eke ekg eko ekr ekv eo- eoa eoe eog eok eoo eor era ere erg erk ero err erv eva eve evg evo evr evv gaa gae gag gak gao gar gav ge- gea gee geg gek geo ger gev gga ggg ggo ggr ggv gka gko goa goe gog gok goo gor gov gra gre grg grk gro grr grv gva gve gvg gvk gvo gvr ka- kaa kae kag kak kao kar kav ke- kea kee keg kek keo ker kev kga kgo kgv kke kkk kkr kkv koa koe kog kok koo kor kra krg krk kro krr krv kva kvk kvo kvr kvv oaa oae oag oak oao oar oav oea oee oeg oeo oer oga oge ogg ogo oka oke okg okk oko okr oo- ooa oog ook ooo oor oov or- ora ore org ork oro orr orv ov- ova ove ovo ovv ra- raa rae rag rak rao rar rav re- rea ree reg rek reo rer rev rga rge rgg rgk rgo rgr rgv rke rkg rkk rko rkv roa roe rog rok roo ror rov rra rrg rrk rrr rva rve rvg rvo rvr rvv v-a v-e vaa vae vag vak vao var vav vea vee veg vek veo ver vga vgg vgo vgr vka vkg voa voe vog vok voo vor vov vra vre vrg vrk vrr vva vvg vvo vvr vvv