a-a a-z aaa aad aan aap aay aaz ad- ada add adn adp ady adz an- ana and ann anp any anz ap- apa apd apn app apy ay- aya ayd ayn ayp ayz az- aza azd azn azp azy azz daa dad dan dap day daz dda ddd ddn ddp ddy ddz dna dnd dnn dnp dny dnz dpa dpd dpn dpp dpz dy- dya dyd dyn dyp dyy dza dzd dzp naa nad nan nap nay naz nda ndd ndn ndp ndy nna nnn nnp nnz npa npd npn npp npz nya nyd nyn nyp nyy nzd nzp nzz p-p paa pad pan pap pay paz pda pdd pdn pdp pdz pn- pna pnd pnn pnp pny ppa ppd ppn ppp ppz py- pya pyd pyn pzp yaa yad yan yap yay yaz yda ydn ydy yna ynd ynn ynp yny ypa ypd yyy yyz yzy zaa zad zan zap zay zaz znd znn znp zpp zzy zzz