The following six years (1969–70 up to 1974–75), the competition was held with three Groups, whereas from 1975 to 1976 up to 1982–83 the league was again contested in two Groups, North and South.
For six years (from 1969–70 to 1974–75), there were three groups for the competition. From 1975 through 1976 until 1982–83, the league was divided into two groups: North and South.