-er a-a a-t aaa aae aag aao aar aat aea aee aeg aeo aer aet ag- aga age agg ago agr agt aoa aoe aog aoo aor aot ar- ara are arg aro arr art at- ata ate atg ato atr att eaa eae eag eao ear eat eea eee eeg eeo eer eet ega ege egg ego egr egt eo- eoa eoe eog eoo eor eot era ere erg ero err ert eta ete etg eto etr ett gaa gae gag gao gar gat ge- gea gee geg geo ger get gga ggg ggo ggr ggt goa goe gog goo gor got gra gre grg gro grr grt gta gte gtg gto gtr gtt oaa oae oag oao oar oat oea oee oeg oeo oer oet oga oge ogg ogo ogt oo- ooa oog ooo oor oot or- ora ore org oro orr ort ot- ota ote otg oto otr ott ra- raa rae rag rao rar rat re- rea ree reg reo rer ret rga rge rgg rgo rgr rgt roa roe rog roo ror rot rra rrg rrr rrt rta rte rtg rto rtr rtt taa tae tag tao tar tat te- tea tee teg teo ter tet tga tge tgg tgo tgr tgt to- toa toe tog too tor tot tra tre trg tro trr trt tta tte ttg tto ttr ttt