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

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

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