a-a a-z aaa aad aao aav aay aaz ad- ada add ado adv ady adz aoa aod aoo aov av- ava avd avo avy avz ay- aya ayd ayo ayz az- aza azd azo azy azz daa dad dao dav day daz dda ddd ddo ddy ddz doa dod doo dov doy doz dva dvd dy- dya dyd dyo dyy dza dzd dzo oaa oad oao oav oda odd odo odv oo- ooa ood ooo oov ov- ova ovd ovo ovv oya oyd oyo oza ozo ozz v-a vaa vad vao vav vay vaz vdd vdo vdv voa vod voo vov voy voz vva vvo vvv vvz vyd yaa yad yao yav yay yaz yda ydo ydy yod yoo yoy yva yvo yvy yyy yyz yzy zaa zad zao zav zay zaz zdv zo- zoa zod zoo zzy zzz