altgr keycode 2 = exclam
altgr keycode 3 = at
altgr keycode 4 = numbersign
altgr keycode 6 = percent
altgr keycode 7 = asciicircum
altgr keycode 8 = ampersand
altgr keycode 9 = asterisk
altgr keycode 10 = parenleft
altgr keycode 11 = parenright
altgr keycode 12 = underscore
altgr keycode 13 = plus
altgr keycode 15 = tilde
altgr keycode 24 = slash
altgr keycode 25 = backslash
altgr keycode 32 = pound
altgr keycode 37 = quotedbl
altgr keycode 38 = apostrophe
altgr keycode 50 = question
altgr keycode 51 = semicolon
altgr keycode 52 = colon