Write down some points on Yugoslav Cup using given paragraph as a base.
1. Clubs from all levels of the football pyramid were eligible to participate in the Yugoslav Cup.
2. Additionally, amateur teams assembled by numerous enterprises and industrial plants as well as individual Yugoslav People's Army garrisons were encouraged to compete, which meant that each cup edition may include thousands of teams in its preliminary rounds.
3. Prior to the first round proper, where they would be partnered with top-flight teams, these teams would compete in a number of qualification rounds.