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

*QUERY*
IN: dax tufa dax OUT: RED RED RED RED
IN: zup fep OUT: BLUE BLUE BLUE BLUE
IN: zup dax tufa lug OUT: BLUE RED PURPLE RED PURPLE
IN: zup OUT: BLUE
IN: dax zup OUT: RED BLUE
IN: dax lug fep OUT: RED PURPLE RED PURPLE RED PURPLE RED PURPLE
IN: lug tufa kiki OUT: PURPLE GREEN PURPLE GREEN
IN: zup dax OUT: BLUE RED
IN: kiki tufa dax OUT: GREEN RED GREEN RED
IN: kiki kiki tufa zup OUT: GREEN GREEN BLUE GREEN BLUE

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