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

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

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