This Standard Riff shape nr. 4 slides through 3 Blues Positions connecting a large chunk of the neck.
3 Blues Positions, Key of F
Each chord in the progression has its own Sliding Standard Riff, with the one on the I-Chord starting on the tonic on string 6.
But a similar shape can be added to this riff, by starting on the tonic F on string 4 (3rde fret).
AND there’s one starting on string 2. The tonic F sits on fret 5.
On the IV chord Bb7 and V chord C7 you can play similar shapes, each starting on the root of the chord.
Keep your eye on the location of that root and slide away!