21.  The old system of informal carriers is giving way to more professional trucking companies.

22.  These include troupes from the army, the railroad, the coal mines and the handicapped, but most are professional companies.

23.  Times Mirror Co. announced plans Friday to sell its underperforming assets, including its professional training company, its health information company and its software development subsidiary.

24.  But he said the firm was soliciting suggestions from its employees as well as professional branding companies.