You've almost fully mastered the Mod layer but there are still a couple of keys to learn.
The individual keys are:
- Mod + { 1 ... 9 } = { F1 ... F9 }
- Mod + 0 = F10
- Mod + - = F11
- Mod + = = F12
- Mod + ~ = Esc
- Mod + Q = Esc
- Mod + A = Caps Lock