Note: this chart from is from the "demo" version, which is imho way better than the Thriller album version. Here's the YouTube link: https://youtu.be/u3v4v3G-PVE
Two chords or three at the most but mainly for embellishing or propelling the rhythm with syncopation. G, G9sus4 (F/G), G7. Play rhythm as G on ah of 1, F/G on e of 2 and G7 on down beat of 3. Repeat in each measure.