a-a a-z aaa aao aap aar aay aaz aoa aoo aop aor ap- apa apo app apr apy ar- ara aro arp arr ary arz ay- aya ayo ayp ayr ayz az- aza azo azp azy azz oaa oao oap oar oo- ooa ooo oop oor op- opa opo opp opr opy or- ora oro orp orr ory orz oya oyo oza ozo ozz p-p paa pao pap par pay paz poa poo pop por poy poz ppa ppo ppp ppr ppz pra pro prp prr pry prz py- pya pyo pyr pzp ra- raa rao rap rar ray raz roa roo rop ror roy roz rpa rpo rpp rpr rpz rra rrp rrr ry- rya ryo ryr ryy ryz rza rzo rzy yaa yao yap yar yay yaz yoo yop yor yoy ypa ypo yra yro yrp yyy yyz yzr yzy zaa zao zap zar zay zaz zo- zoa zoo zor zpo zpp zpr zro zrp zzr zzy zzz