xev output

KeyPress event, serial 37, synthetic NO, window 0x3a00001,
    root 0x150, subw 0x0, time 4660205, (-289,215), root:(504,472),
    state 0x2010, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

KeyPress event, serial 37, synthetic NO, window 0x3a00001,
    root 0x150, subw 0x0, time 4661534, (-289,215), root:(504,472),
    state 0x2014, keycode 54 (keysym 0x63, c), same_screen YES,
    XLookupString gives 1 bytes: (03) ""
    XmbLookupString gives 1 bytes: (03) ""
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x3a00001,
    root 0x150, subw 0x0, time 4661642, (-289,215), root:(504,472),
    state 0x2014, keycode 54 (keysym 0x63, c), same_screen YES,
    XLookupString gives 1 bytes: (03) ""
    XFilterEvent returns: False

KeyRelease event, serial 37, synthetic NO, window 0x3a00001,
    root 0x150, subw 0x0, time 4663439, (-289,215), root:(504,472),
    state 0x2014, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False