a-a aaa aao aap aar aay aoa aoo aop aor ap- apa apo app apr apy ar- ara aro arp arr ary ay- aya ayo ayp ayr oaa oao oap oar oo- ooa ooo oop oor op- opa opo opp opr opy or- ora oro orp orr ory oya oyo p-p paa pao pap par pay poa poo pop por poy ppa ppo ppp ppr pra pro prp prr pry py- pya pyo pyr ra- raa rao rap rar ray roa roo rop ror roy rpa rpo rpp rpr rra rrp rrr ry- rya ryo ryr ryy yaa yao yap yar yay yoo yop yor yoy ypa ypo yra yro yrp yyy