It depends. ADADE could be an Asus4 chord, i.e., A suspended fourth, which will probably resolve to an A maj. triad. If it's a D chord, than it would be a D add 9/A without a third. One often writes "add 9" if the ninth is present and it's not a dominant seventh chord. The bass note of the chord is often given after a slash, if it's not the root. However, I don't really like this. I don't write "add 9" myself, but put any additional intervals as subscripts. If an interval that's usually there is missing, I'll write it as a subscript with a diagonal stroke from the upper right to the lower left. In the case of ADADE, interpreted as a D chord, or EAEABE interpreted as an A chord, I'd do this for the third.