a-a aaa aad aao aav aay ad- ada add ado adv ady aoa aod aoo aov av- ava avd avo avy ay- aya ayd ayo daa dad dao dav day dda ddd ddo ddy doa dod doo dov doy dva dvd dy- dya dyd dyo dyy oaa oad oao oav oda odd odo odv oo- ooa ood ooo oov ov- ova ovd ovo ovv oya oyd oyo v-a vaa vad vao vav vay vdd vdo vdv voa vod voo vov voy vva vvo vvv vyd yaa yad yao yav yay yda ydo ydy yod yoo yoy yva yvo yvy yyy