a-a a-c aaa aac aad aao aay ac- aca acc acd aco acy ad- ada adc add ado ady aoa aoc aod aoo ay- aya ayc ayd ayo c-- caa cac cad cao cay cca ccc ccd cco cda cdc cdd cdo cdy co- coa coc cod coo coy cya cyc cyd cyo daa dac dad dao day dca dcc dcd dco dda ddc ddd ddo ddy doa doc dod doo doy dy- dya dyc dyd dyo dyy oaa oac oad oao oc- oca occ ocd oco oda odc odd odo oo- ooa ooc ood ooo oya oyd oyo yaa yac yad yao yay yca ycc ycd yco ycy yda ydo ydy yoc yod yoo yoy yyc yyy