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

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

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