What is the test for a judge to sentence a defendant to two separate sentences for the same crime?

A trial court has "broad discretion to impose consecutive sentences when a person is convicted of two or more crimes." (People v. Shaw (2004) 122 Cal.App.4th 453, 458, citing 669.) The court must state on the record its reasons for imposing consecutive sentences. (Cal. Rules of Court, rule 4.406(a) & (b)(5).) "In the absence of a clear showing of abuse, the trial court's discretion in this respect is not to be disturbed on appeal. [Citation.] Discretion is abused when the court exceeds the bounds of reason, all of the circumstances being considered." (People v. Bradford (1976) 17 Cal.3d 8, 20.)