Black who carries Yel. and Choc. bred to a Yellow who carries Choc.
Produces 12.5% By ~ 12.5% Yy ~ 25%Byc ~ 25% Yc ~ 12.5% Cy and 12.5% NBP yellow

EeBb + eeBb = 25% EeBb; 25% eeBb; 12.5% Eebb; 12.5% EeBB; 12.5% eeBB; 12.5% eebb