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

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

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