a-a aaa aak aao aap aay aka akk ako akp aoa aok aoo aop ap- apa apk apo app apy ay- aya ayk ayo ayp ka- kaa kak kao kap kay kkk kkp kky koa kok koo kop koy kpa kpk kpo kpp kya kyo kyp oaa oak oao oap oka okk oko okp oo- ooa ook ooo oop op- opa opk opo opp opy oya oyo p-p paa pak pao pap pay pka pko pkp pky poa pok poo pop poy ppa ppk ppo ppp py- pya pyk pyo yaa yak yao yap yay yka ykk yok yoo yop yoy ypa ypo yyy