a-a a-t aaa aap aar aat aay ap- apa app apr apt apy ar- ara arp arr art ary at- ata atp atr att ay- aya ayp ayr ayt p-p paa pap par pat pay ppa ppp ppr ppt pra prp prr prt pry pt- pta ptp ptr ptt pty py- pya pyr pyt ra- raa rap rar rat ray rpa rpp rpr rpt rra rrp rrr rrt rta rtp rtr rtt rty ry- rya ryr ryy taa tap tar tat tay tpa tpp tpr tpt tra trp trr trt try tta ttp ttr ttt tty tya typ tyr tyt yaa yap yar yat yay ypa yra yrp yrt yta ytp ytr ytt yyt yyy