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

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

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