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

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

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