a-a a-c aaa aac aan aao aar aay ac- aca acc acn aco acr acy an- ana anc ann ano anr any aoa aoc aon aoo aor ar- ara arc arn aro arr ary ay- aya ayc ayn ayo ayr c-- caa cac can cao car cay cca ccc ccn cco ccr cn- cna cnc cnn cno cnr cny co- coa coc con coo cor coy cra crc crn cro crr cry cya cyc cyn cyo cyr naa nac nan nao nar nay nca ncc ncn nco ncr nna nnc nnn nno no- noa noc non noo nor noy nra nrc nrn nro nrr nry nya nyc nyn nyo nyy oaa oac oan oao oar oc- oca occ ocn oco ocr on- ona onc onn ono onr ony oo- ooa ooc oon ooo oor or- ora orc orn oro orr ory oya oyo ra- raa rac ran rao rar ray rca rcc rcn rco rcr rna rnc rnn rno rnr rny roa roc ron roo ror roy rra rrc rrn rrr ry- rya ryc ryn ryo ryr ryy yaa yac yan yao yar yay yca ycc yco ycy yna ynn yny yoc yon yoo yor yoy yra yrc yrn yro yyc yyy