What is the range of sentences for a man convicted of two counts of being a felon in possession of a firearm and an attempted robbery?

A jury found defendant guilty on both counts. After finding true the allegations that defendant suffered two prior strike convictions for serious or violent felonies, the trial court sentenced defendant under the three strikes law to an indeterminate term of 25 years to life for the attempted robbery conviction, with a concurrent sentence of 25 years to life for the conviction of being a felon in possession of a firearm. This court affirmed the judgment. (People v. Dawson, supra, E019739.)