This is a little addition to my previous post below.
Here are the rest of my mini book pages for those of you who asked...
3 markers that pair well together for shading were chosen from each family, and put in sets of 36 based on the 4 family criteria: Basics, Mutes, Earth, & Brights.Here are a few alternatives, times when you might like a different selections better:
R32,35,37 and BV02,13,17 instead
Y00, 11, 13 and E51,53,55
RV13,04,06 and YG21,13,17
B95, 97,99 and E44, 47,49