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

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

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