clear control
clear mod1

keycode  64 = Control_L NoSymbol Control_L
keycode  37 = Alt_L Meta_L Alt_L Meta_L
keycode 108 = Control_R NoSymbol Control_R
keycode 105 = Alt_R Meta_R Alt_R Meta_R

add mod1 = Alt_R Alt_L Meta_R Meta_L
add control = Control_R Control_L