-er a-a a-t aaa aae aag aak aao aar aat aea aee aeg aek aeo aer aet ag- aga age agg agk ago agr agt aka ake akg akk ako akr aoa aoe aog aok aoo aor aot ar- ara are arg ark aro arr art at- ata ate atg ato atr att eaa eae eag eak eao ear eat eea eee eeg eek eeo eer eet ega ege egg ego egr egt eka eke ekg eko ekr ekt eo- eoa eoe eog eok eoo eor eot era ere erg erk ero err ert eta ete etg etk eto etr ett gaa gae gag gak gao gar gat ge- gea gee geg gek geo ger get gga ggg ggo ggr ggt gka gko gkt goa goe gog gok goo gor got gra gre grg grk gro grr grt gta gte gtg gtk gto gtr gtt k-t ka- kaa kae kag kak kao kar kat ke- kea kee keg kek keo ker ket kga kgo kke kkk kkr kkt koa koe kog kok koo kor kot kra krg krk kro krr krt kta kte ktg ktk kto ktr ktt oaa oae oag oak oao oar oat oea oee oeg oeo oer oet oga oge ogg ogo ogt oka oke okg okk oko okr oo- ooa oog ook ooo oor oot or- ora ore org ork oro orr ort ot- ota ote otg otk oto otr ott ra- raa rae rag rak rao rar rat re- rea ree reg rek reo rer ret rga rge rgg rgk rgo rgr rgt rke rkg rkk rko rkt roa roe rog rok roo ror rot rra rrg rrk rrr rrt rta rte rtg rtk rto rtr rtt taa tae tag tak tao tar tat te- tea tee teg tek teo ter tet tga tge tgg tgk tgo tgr tgt tka tke tkg tkk tko tkr tkt to- toa toe tog tok too tor tot tra tre trg trk tro trr trt tta tte ttg ttk tto ttr ttt