GUWAHATI, June 12: An All-Guwahati on-the-spot drawing competition will be held on Sunday at Nehru Stadium. The competition, which will be organized by the Ugratara Athletic Club, will have four categories which are group 'A' (Nursery to Class - I), Group 'B' (Class - II to Class IV), Group 'C' - (Class V to Class VII) and Group 'D' - (Class - VIII to Class X).