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

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

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