Here’s an exercise based on the 4 major triads as found in the Dominant 8 Note scale. The dominant 8 note scale is the diminished half whole scale.
Contained within the scale are 4 major triads. The Bb dominant 8 note scale has Bb, Db, E and G major triads. This exercise is made from these triads. It could be played over a Bb13b9, Db13b9, E13b9 or G13b9 chords.