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

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

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