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

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

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