a-a a-c aaa aac aao aar aav aay ac- aca acc aco acr acv acy aoa aoc aoo aor aov ar- ara arc aro arr arv ary av- ava avc avo avr avy ay- aya ayc ayo ayr c-- caa cac cao car cav cay cca ccc cco ccr ccv co- coa coc coo cor cov coy cra crc cro crr crv cry cva cvc cvo cvr cvv cya cyc cyo cyr oaa oac oao oar oav oc- oca occ oco ocr ocv oo- ooa ooc ooo oor oov or- ora orc oro orr orv ory ov- ova ovc ovo ovv oya oyo ra- raa rac rao rar rav ray rca rcc rco rcr rcv roa roc roo ror rov roy rra rrc rrr rva rvc rvo rvr rvv rvy ry- rya ryc ryo ryr ryy v-a vaa vac vao var vav vay vca vcc vco vcr vcy voa voc voo vor vov voy vra vrc vrr vry vva vvc vvo vvr vvv yaa yac yao yar yav yay yca ycc yco ycv ycy yoc yoo yor yoy yra yrc yro yva yvo yvr yvy yyc yyy