Watch the Hammers & Pulloffs: Level 3 online guitar lesson by Chris Buono from Guitar Gym: Hammers and Pull-Off Workouts
Forging on with the three-note-per-string Hammer-On & Pull-Offs Workouts we shift into a top three string setup where you'll play two sets of fingerings over a two-bar instance as you descend down the neck. The first one-bar set, which makes use of hammer-ons, will start off with a 1-2-4 fingering to cover the whole step/whole step sequence. From there you'll shift over to the 2nd string for the positionally comfortable 1-2-3 fingering for the whole step/half step sequence. To cap it off you go down once more to the 3rd string to play the half step/whole step sequence with a trickier 1-2-3.
Shifting the idea down a whole step you do it all again, but with pull-offs and a new fingering starting with a 1-3-4 for the whole step/whole step sequence. That puts you in a nice position to play the following whole step/half step sequence with a 1-3-4 setup capped off by a 1-2-4 sequence for the 3rd string half step/whole step run. You'll continue down the neck until you hit the 1st position where your 1st finger will be on the 1st fret. Yes, it's quirky, but it's a great workout for the 2nd and 3rd fingers as well as playing sequences that best utilize each of these legato techniques.