*SUPPORT*
IN: lug zup dax OUT: RED BLUE RED RED
IN: dax kiki lug OUT: RED GREEN BLUE
IN: gazzer tufa lug OUT: YELLOW BLUE
IN: dax dax tufa kiki tufa kiki tufa lug OUT: RED RED GREEN GREEN BLUE
IN: gazzer zup lug wif OUT: BLUE YELLOW BLUE BLUE BLUE YELLOW BLUE BLUE
IN: gazzer dax zup lug tufa lug OUT: YELLOW BLUE RED BLUE BLUE BLUE
IN: kiki zup lug OUT: BLUE GREEN BLUE BLUE
IN: dax lug tufa dax tufa dax OUT: RED BLUE RED RED
IN: kiki tufa lug OUT: GREEN BLUE
IN: kiki zup lug tufa dax OUT: BLUE GREEN BLUE BLUE RED
IN: gazzer gazzer zup dax OUT: YELLOW RED YELLOW RED RED
IN: lug lug OUT: BLUE BLUE
IN: dax lug kiki zup gazzer OUT: RED BLUE YELLOW GREEN YELLOW YELLOW
IN: kiki dax zup dax OUT: GREEN RED RED RED RED

*QUERY*
IN: gazzer kiki OUT: YELLOW GREEN
IN: kiki zup kiki OUT: GREEN GREEN GREEN GREEN
IN: gazzer wif OUT: YELLOW YELLOW
IN: gazzer OUT: YELLOW
IN: lug zup gazzer wif OUT: YELLOW BLUE YELLOW YELLOW YELLOW BLUE YELLOW YELLOW
IN: dax gazzer lug zup lug tufa lug OUT: RED YELLOW BLUE BLUE BLUE BLUE BLUE
IN: kiki gazzer wif OUT: GREEN YELLOW GREEN YELLOW
IN: kiki zup dax OUT: RED GREEN RED RED
IN: dax OUT: RED
IN: kiki OUT: GREEN

*GRAMMAR*
dax -> RED 
 kiki -> GREEN 
 lug -> BLUE 
 gazzer -> YELLOW 
 u1 zup u2 -> [u2] [u1] [u2] [u2] 
 x1 wif -> [x1] [x1] 
 x1 tufa u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 