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

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

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