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

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

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