Here’s another guitar-based blues lick commonly found in guitarists like T-Bone Walker, BB King, or Hollywood Fats. This is in G, but could be moved to any key with little modification as most of it is in closed position.
Good over a shuffle or especially a swing. Key thing here is to get the pick direction right, as the pickup bar needs to start on an upstroke (as it’s the “and” after 3).
Tablature and other mandolin blues instruction available at my site (patreon.com/JimRichter).