keycode 12 = F1
keycode 20 = Multi_key
keycode 22 = Escape
keycode 36 = grave asciitilde
keycode 49 = backslash bar
keycode 50 = Delete BackSpace
 
remove Lock = Caps_Lock
keycode 126 = Alt_L
! keysym Caps_Lock = Control_R
! add Control = Control_R

add mod1 = Alt_L Multi_key

add Control = Control_L
add Shift = Shift_L