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

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

*GRAMMAR*
kiki -> PURPLE 
 tufa -> YELLOW 
 lug -> RED 
 fep -> BLUE 
 x1 wif x2 -> [x2] [x1] 
 u1 zup -> [u1] [u1] [u1] 
 u1 dax u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 