It would not be proper for an attorney who, as a part time job, serves as executive director of the Nebraska County Attorneys' Association, to contemporaneously represent clients in a private practice in any of the following character of matters:

1. Representation of a criminal defendant being prosecuted by a county attorney on behalf of the State of Nebraska;
2. Representation of an estate in the determination of inheritance taxes;
3. Representation of a client in a civil matter where the opposing party is the State of Nebraska or an agency thereof; and
4. Representation of a client in a dissolution of marriage where minor children are involved.