-er -ey a-a aaa aae aaf aao aar aay aea aee aef aeo aer aey af- afa afe aff afo afr afy aoa aoe aof aoo aor ar- ara are arf aro arr ary ay- aya aye ayf ayo ayr eaa eae eaf eao ear eea eee eef eeo eer eey ef- efa efe eff efo efr eo- eoa eoe eof eoo eor era ere erf ero err ery eya eye eyo eyr faa fae faf fao far fay fea fee fef feo fer fey ffa ffe fff ffo ffr ffy foa foe fof foo for foy fra fre frf fro frr fry fy- fya fye fyo oaa oae oaf oao oar oea oee oef oeo oer oey of- ofa ofe off ofo ofr oo- ooa oof ooo oor or- ora ore orf oro orr ory oya oye oyo ra- raa rae raf rao rar ray re- rea ree ref reo rer rey rfa rfe rff rfo rfr roa roe rof roo ror roy rra rrf rrr ry- rya rye ryf ryo ryr ryy yaa yae yaf yao yar yay yea yee yef yeo yer yey yfa yfe yff yfr yoe yof yoo yor yoy yra yre yrf yro yye yyf yyy