*SUPPORT*
IN: kiki fep lug gazzer OUT: GREEN BLUE YELLOW
IN: gazzer OUT: BLUE
IN: fep wif OUT: YELLOW RED
IN: fep OUT: YELLOW
IN: kiki OUT: GREEN
IN: kiki lug kiki tufa fep OUT: YELLOW GREEN GREEN
IN: fep zup tufa gazzer wif lug gazzer OUT: BLUE BLUE RED YELLOW YELLOW YELLOW YELLOW
IN: fep wif lug kiki OUT: YELLOW GREEN RED
IN: fep lug wif zup OUT: RED YELLOW RED YELLOW RED YELLOW RED YELLOW
IN: kiki lug wif OUT: RED GREEN
IN: fep tufa wif OUT: RED YELLOW
IN: gazzer zup OUT: BLUE BLUE BLUE BLUE
IN: wif lug fep OUT: YELLOW RED
IN: wif lug wif OUT: RED RED

*QUERY*
IN: gazzer lug fep OUT: YELLOW BLUE
IN: kiki lug kiki OUT: GREEN GREEN
IN: wif OUT: RED
IN: wif zup OUT: RED RED RED RED
IN: fep zup OUT: YELLOW YELLOW YELLOW YELLOW
IN: kiki lug kiki tufa wif lug fep OUT: YELLOW RED GREEN GREEN
IN: kiki zup OUT: GREEN GREEN GREEN GREEN
IN: gazzer wif lug gazzer OUT: BLUE BLUE RED
IN: kiki lug gazzer zup OUT: BLUE GREEN BLUE GREEN BLUE GREEN BLUE GREEN
IN: wif kiki lug kiki tufa wif lug fep OUT: YELLOW RED RED GREEN GREEN

*GRAMMAR*
wif -> RED 
 fep -> YELLOW 
 gazzer -> BLUE 
 kiki -> GREEN 
 x1 zup -> [x1] [x1] [x1] [x1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 lug u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 