a-a a-t aaa aao aar aat aay aoa aoo aor aot ar- ara aro arr art ary at- ata ato atr att ay- aya ayo ayr ayt oaa oao oar oat oo- ooa ooo oor oot or- ora oro orr ort ory ot- ota oto otr ott oya oyo ra- raa rao rar rat ray roa roo ror rot roy rra rrr rrt rta rto rtr rtt rty ry- rya ryo ryr ryy taa tao tar tat tay to- toa too tor tot toy tra tro trr trt try tta tto ttr ttt tty tya tyo tyr tyt yaa yao yar yat yay yoo yor yot yoy yra yro yrt yta yto ytr ytt yyt yyy