(a) At least three persons were involved in an assembly, assembled with a common purpose.

(b) The common purpose of the assembly involved the committing of a crime by open force or acting in a manner to endanger public peace.

(c) The accused was one of the persons assembled.

(a) Duress.

(b) Factual dispute.

(c) Honest and reasonable mistake of belief.

(d) Identification dispute.

(e) Lack of intent.

(f) Mental impairment.

(g) Necessity.