a-a a-c aaa aac aad aao aar aay ac- aca acc acd aco acr acy ad- ada adc add ado adr ady aoa aoc aod aoo aor ar- ara arc ard aro arr ary ay- aya ayc ayd ayo ayr c-- caa cac cad cao car cay cca ccc ccd cco ccr cda cdc cdd cdo cdr cdy co- coa coc cod coo cor coy cra crc crd cro crr cry cya cyc cyd cyo cyr daa dac dad dao dar day dca dcc dcd dco dcr dda ddc ddd ddo ddr ddy doa doc dod doo dor doy dra drc drd dro drr dry dy- dya dyc dyd dyo dyr dyy oaa oac oad oao oar oc- oca occ ocd oco ocr oda odc odd odo odr oo- ooa ooc ood ooo oor or- ora orc ord oro orr ory oya oyd oyo ra- raa rac rad rao rar ray rca rcc rcd rco rcr rda rdc rdd rdo rdr rdy roa roc rod roo ror roy rra rrc rrd rrr ry- rya ryc ryd ryo ryr ryy yaa yac yad yao yar yay yca ycc ycd yco ycy yda ydo ydy yoc yod yoo yor yoy yra yrc yro yyc yyy