A criminal street gang enhancement (Pen.Code, § 186.22, subd.(b)(1)) cannot be used to transform an offense not otherwise listed as a violent or serious felony into one. Thus, a defendant’s prior convictions for violations of Penal Code section 12021, subdivision (a)(1) (felon in possession of a firearm) and Penal Code section 12025 (active participant in a criminal street gang found carrying a concealed firearm), which each had street gang enhancements, were not strike offenses.