a-a a-i aaa aad aaf aai aay ad- ada add adf adi ady af- afa afd aff afi afy ai- aia aid aif aii aiy ay- aya ayd ayf ayi daa dad daf dai day dda ddd ddf ddi ddy dfa dfd dff dfi di- dia did dif dii diy dy- dya dyd dyy faa fad faf fai fay fda fdd fdf fdi ffa ffd fff ffi ffy fia fid fif fii fy- fya fyi i-d i-f ia- iaa iad iaf iai ida idd idf idi idy ifa ifd iff ifi ify iia iid iif iii iya iyy yaa yad yaf yai yay yda ydy yfa yfd yff yid yif yii yyf yyy