a-a a-c aaa aac aad aao aap aay ac- aca acc acd aco acp acy ad- ada adc add ado adp ady aoa aoc aod aoo aop ap- apa apc apd apo app apy ay- aya ayc ayd ayo ayp c-- caa cac cad cao cap cay cca ccc ccd cco ccp cda cdc cdd cdo cdp cdy co- coa coc cod coo cop coy cpa cpc cpd cpo cpp cya cyc cyd cyo cyp daa dac dad dao dap day dca dcc dcd dco dcp dda ddc ddd ddo ddp ddy doa doc dod doo dop doy dpa dpc dpd dpo dpp dy- dya dyc dyd dyo dyp dyy oaa oac oad oao oap oc- oca occ ocd oco ocp oda odc odd odo odp oo- ooa ooc ood ooo oop op- opa opc opd opo opp opy oya oyd oyo p-p paa pac pad pao pap pay pca pcc pcd pco pcp pda pdc pdd pdo pdp poa poc pod poo pop poy ppa ppc ppd ppo ppp py- pya pyc pyd pyo yaa yac yad yao yap yay yca ycc ycd yco ycp ycy yda ydo ydy yoc yod yoo yop yoy ypa ypd ypo yyc yyy