Contractual freedom may be summarized as five different types of sub-freedoms:
1. Freedom to enter into a contract
2. Freedom to choose the other party of a contract
3. Freedom of form
4. Freedom to withdraw a contract
5. Freedom to choose the type and subjectmatter of a contract.

Freedom to act unlawfull contract is not a type of sub-freedoms of contractual freedom. Actually anybody cannot act an unlawfull contract legally.