In chapter $3$ of The Concept of Law, HLA Hart criticizes Austin's command theory of law. He says that this theory might be good as a model for criminal law, but not all laws are part of criminal law. What are some of the counterexamples that Hart formulates against Austin's theory of law? Select all that apply.

I. International law

II$.$ Laws of contracts

III. Laws of wills and inheritance

IV$.$ Laws about court procedures

V$.$ Laws about legislative procedures

VI$.$ Laws about discrimination