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

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

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