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

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

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