As per the screenshot (based upon the default screenset, removing Y+, Y-, A+, A-, B+, B-, C+ & C-
Only hot keys remaining are:
X+ button (fn) 147 --- Arrow RIGHT
X- button (fn) 148 --- Arrow LEFT
Z+ button (fn) 151 --- Arrow UP
Z- button (fn) 152 --- Arrow DOWN
Cycle Stop button (fn) 130 --- ESCAPE KEY
You can add however whatever you want {anyone got a "default" lathe / turn keyboard pattern and I'll setup the hotkeys accordingly)