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

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

*GRAMMAR*
gazzer -> GREEN 
 lug -> PURPLE 
 kiki -> BLUE 
 wif -> RED 
 u1 fep -> [u1] [u1] [u1] [u1] [u1] 
 u1 dax u2 -> [u1] [u2] 
 x1 zup x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 