Bireli style 2-Note Per String Stacking Patterns
Play the following patterns to a metronome at different speeds. Play with up-down rest stroke.

|————————-12-14-|-
|——————-10-13——-|-
|————–9-11————-|-
|———7-10——————|-
|—–7-9———————–|-
|-5-8—————————|- Am
|————————10-13-|-
|——————10-12——-|-
|————-7-10————-|-
|———7-9——————|-
|—–5-8———————-|-
|-5-7————————–|- Dm
|———————-10-12-|-
|—————–9-12——-|-
|————-7-9————|-
|———6-9—————-|-
|—–5-7——————–|-
|-4-7————————|- E
|———————-9-12-|-
|—————–8-10——|-
|————-6-9———–|-
|———5-7—————|-
|—–4-7——————-|-
|-3-5———————–|- A7
And 3 note per string patterns.

|——————————–9-10-12-|-
|————————-7-8-10———|-
|——————-6-7-9—————-|-
|————-4-5-7———————-|-
|——-4-5-7—————————-|-
|-2-3-5———————————-|- GM9
|————————–7-9-10-|-
|——————-7-8-10——–|-
|————-6-7-9—————|-
|——-4-5-7———————|-
|-4-5-7—————————|-
|———————————|- DM9

You will notice that the last two patterns (DM9 and GM9) both look very similar to each other. In fact, I usually subsitute them for each other. In my mind what is happening here is that the DM9 is really being played over a “virtual” D7, which is the five chord of G major. So, its not a true substitution , but it works. My general rule of thumb is that a regular major triad (even if it has a 9 in it) can be played over a dominant 7 chord.
You will get even more milage out of the 3 note per string patterns (which I stole from Romanes book) when you realize that the FM9 pattern (based off the DM9 pattern that I show) is really also a substitute for Dm. As you know, Fmaj7 and FM9 are related to each other and the Dm arpeggio shape fits very well over these arpeggios. For example, over the Dm chord in Dark Eyes, try playing the FM9 3-note per string stacking pattern.
In other words, when a song like Dark Eyes presents me with a chord like Dm, my brain has many choices to play such as FM9 stacking pattern, BbM9 stacking pattern, Dm6, diminished arp, F major 7 arp, and even Em (but I wont explain the last one).