I started using these combinations way back when I first realized that scales didn’t warm up all the fingers and hands nor cover all the possible combinations. Since I was doing considerable sight reading at the time and never really knew what might come up in a rehearsal, I developed these by accident to cover the entire fingerboard and make it all more a bit comfortable from the start. It dawned on me when I saw both Tony Grey and Scott Devine showing very similar exercises in some of their online lessons that they are useful.
Fast forward 40 years plus and I have hand and wrist pain from time to time. Some of it comes from not playing anywhere near the amount of gigs that I used to and the rest is due to age. I don’t make any sort of claim that it will cure whatever pain you might have but they are a good part of a warm up.
So I have now re-instated them in my own routine at the initial warm up. The possible combinations are:
Start at the lowest frets and do the sequences across the strings up and down, then shift up one fret and continue all the way up and back down, one finger to a fret.
I recommend doing at least one of these per day as a step to begin your warm up. Do them the entire length of the fingerboard – cover all the frets and strings you have. Have fun with them.