The final two types of seventh chords are the Minor 7 flat 5 (m7b5) and the diminished 7th (°7 or dim7). Here are arpeggios of both these chord types. Memorize the formula for each one (shown on page 35) and the sound as well, and then work out other fingerings for the argegios. Experiment with them over their respective chords and then find some songs which use these chords to practice improvising with them.