Translates of linear codes over Z/sub 4/

We give a method to compute the complete weight distribution of translates of linear codes over Z/sub 4/. The method follows known ideas that have already been used successfully by others for Hamming weight distributions. For the particular case of quaternary Preparata codes, we obtain that the number of distinct complete weights for the dual Preparata codes and the number of distinct complete coset weight enumerators for the Preparata codes are both equal to ten, independent of the code length.