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

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

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