a-a a-z aaa aad aap aar aay aaz ad- ada add adp adr ady adz ap- apa apd app apr apy ar- ara ard arp arr ary arz ay- aya ayd ayp ayr ayz az- aza azd azp azy azz daa dad dap dar day daz dda ddd ddp ddr ddy ddz dpa dpd dpp dpr dpz dra drd drp drr dry drz dy- dya dyd dyp dyr dyy dza dzd dzp dzr p-p paa pad pap par pay paz pda pdd pdp pdr pdz ppa ppd ppp ppr ppz pra prd prp prr pry prz py- pya pyd pyr pzp ra- raa rad rap rar ray raz rda rdd rdp rdr rdy rpa rpd rpp rpr rpz rra rrd rrp rrr ry- rya ryd ryr ryy ryz rza rzy yaa yad yap yar yay yaz yda ydy ypa ypd yra yrp yyy yyz yzr yzy zaa zad zap zar zay zaz zpp zpr zrp zzr zzy zzz