What is the range of life sentences available to a defendant who has been convicted of the most serious crimes but has not had two prior strikes?

imprisonment to the base term. Instead, it provides for an alternate sentence (25 years to life) when it is proven that the defendant has suffered at least two prior serious felony convictions." (People v. Williams, supra, 227 Cal.App.4th at p. 744.) Thus, the sentence for the defendant's substantive offenses was 25 years to life even if the statutorily enumerated terms of imprisonment for those offenses without prior strike allegations would not have been life sentences. (Id. at p. 745.) Therefore, the court had erred in imposing the 10-year additional terms because it could either have imposed the 10-year terms or the life terms, but not both. (Ibid.)