a-a aaa aad aak aao aar aay ad- ada add adk ado adr ady aka akd akk ako akr aoa aod aok aoo aor ar- ara ard ark aro arr ary ay- aya ayd ayk ayo ayr daa dad dak dao dar day dda ddd ddk ddo ddr ddy dka dkk dko dkr doa dod dok doo dor doy dra drd drk dro drr dry dy- dya dyd dyk dyo dyr dyy ka- kaa kad kak kao kar kay kda kdk kdo kdr kdy kkk kkr kky koa kod kok koo kor koy kra krd krk kro krr kry kya kyd kyo kyr oaa oad oak oao oar oda odd odo odr oka okd okk oko okr oo- ooa ood ook ooo oor or- ora ord ork oro orr ory oya oyd oyo ra- raa rad rak rao rar ray rda rdd rdo rdr rdy rkk rko rky roa rod rok roo ror roy rra rrd rrk rrr ry- rya ryd ryk ryo ryr ryy yaa yad yak yao yar yay yda ydo ydy yka ykk yod yok yoo yor yoy yra yro yyy