a-a a-t aaa aad aao aat aay ad- ada add ado adt ady aoa aod aoo aot at- ata atd ato att ay- aya ayd ayo ayt daa dad dao dat day dda ddd ddo ddt ddy doa dod doo dot doy dta dtd dto dtt dty dy- dya dyd dyo dyy oaa oad oao oat oda odd odo odt oo- ooa ood ooo oot ot- ota otd oto ott oya oyd oyo taa tad tao tat tay tda tdd tdo tdt tdy to- toa tod too tot toy tta ttd tto ttt tty tya tyd tyo tyt yaa yad yao yat yay yda ydo ydt ydy yod yoo yot yoy yta ytd yto ytt yyt yyy