~ = let ring

Drop D Tuning

-------------------------------------
3-3-3--3-3--3-3-3--------------------
2-2-2--0-0--2-2-2--------------------
0-0-0--0-0--0-0-0--------------------
-------------------------------------
-------------------------------------

-------------------------------------
3-3-3--3-3--3-3-3--------------------
2-2-2--0-0--2-2-2--------------------
0-0-0--0-0--0-0-0--------------------
-------------------------------------
-------------------------------------

-------------------------------------
3-3-3--3~~--3-3-3--3-3--3-3-3--3-3---
2-2-2--0~~--2-2-2--0-0--2-2-2--0-0---
0-0-0--0~~--0-0-0--0-0--0-0-0--0-0---
-------------------------------------
-------------------------------------


You can repeat that as many times as you want.