⏩I. Introduction⏩
- Definition of collusion.
- Initial consideration of the view that collusion occurs only in certain market structures.

⏩II. Understanding Collusion⏩
- Further explanation of collusion.
- Different forms of collusion⬅: formal and tacit.
- Conditions that favor collusion.

⏩III. Collusion in Different Market Structures⏩
- Analysis of the occurrence of collusion in different market structures⬅: Perfect competition, monopolistic competition, monopoly, and oligopoly.

⏩IV. Emphasis on Oligopoly⏩
- Discussion on why oligopoly market structure is most likely to promote collusion.
- Limitations and competition within oligopoly.

⏩V. Conclusion⏩
- Recap of the argument and response to the view that collusion occurs only in certain market structures.