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

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

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