-er a-a aaa aae aag aar aau aav aea aee aeg aer aeu aev ag- aga age agg agr agu agv ar- ara are arg arr aru arv au- aua aue aug aur auv av- ava ave avg avr avu eaa eae eag ear eau eav eea eee eeg eer eev ega ege egg egr egu era ere erg err eru erv eu- eua eue eug eur euv eva eve evg evr evv gaa gae gag gar gau gav ge- gea gee geg ger geu gev gga ggg ggr ggu ggv gra gre grg grr gru grv gu- gua gue gug gur guu guv gva gve gvg gvr gvu ra- raa rae rag rar rau rav re- rea ree reg rer reu rev rga rge rgg rgr rgv rra rrg rrr rru rua rue rug rur ruu ruv rva rve rvg rvr rvu rvv ua- uaa uae uag uar uau uav uea uee ueg uer uga uge ugg ugr ugu ur- ura ure urg urr uru uua uue uug uur uuu uva uve uvu uvv v-a v-e vaa vae vag var vau vav vea vee veg ver veu vga vgg vgr vgu vra vre vrg vrr vru vue vug vur vuv vva vvg vvr vvv