*SUPPORT*
IN: dax fep lug OUT: GREEN PINK
IN: dax tufa gazzer fep lug OUT: GREEN PURPLE GREEN PURPLE PINK
IN: tufa gazzer OUT: PURPLE PURPLE
IN: dax fep kiki zup kiki OUT: BLUE GREEN BLUE
IN: dax OUT: GREEN
IN: tufa gazzer gazzer OUT: PURPLE PURPLE PURPLE PURPLE
IN: kiki OUT: BLUE
IN: lug gazzer fep dax OUT: PINK PINK GREEN
IN: tufa OUT: PURPLE
IN: dax dax fep dax OUT: GREEN GREEN GREEN
IN: kiki fep lug gazzer OUT: BLUE PINK BLUE PINK
IN: lug lug OUT: PINK PINK
IN: dax gazzer fep kiki OUT: GREEN GREEN BLUE
IN: kiki fep kiki zup kiki OUT: BLUE BLUE BLUE

*QUERY*
IN: tufa lug dax OUT: PURPLE PINK GREEN
IN: dax dax kiki OUT: GREEN GREEN BLUE
IN: kiki lug fep lug gazzer fep dax OUT: BLUE PINK PINK BLUE PINK PINK GREEN
IN: dax zup lug tufa lug fep dax OUT: PINK PURPLE PINK GREEN GREEN
IN: kiki fep tufa OUT: BLUE PURPLE
IN: kiki kiki fep dax fep dax fep dax OUT: BLUE BLUE GREEN GREEN GREEN
IN: lug gazzer gazzer fep lug OUT: PINK PINK PINK PINK PINK
IN: lug kiki dax gazzer fep tufa fep dax OUT: PINK BLUE GREEN PINK BLUE GREEN PURPLE GREEN
IN: tufa kiki zup lug OUT: PINK PURPLE BLUE
IN: dax zup dax fep kiki fep dax gazzer OUT: GREEN BLUE GREEN GREEN BLUE GREEN GREEN

*GRAMMAR*
dax -> GREEN 
 lug -> PINK 
 tufa -> PURPLE 
 kiki -> BLUE 
 x1 fep u1 -> [x1] [u1] 
 x1 zup x2 -> [x2] [x1] 
 x1 gazzer -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 