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

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

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