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

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

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