*SUPPORT*
IN: fep OUT: RED
IN: kiki lug fep OUT: PINK RED
IN: fep dax lug fep OUT: RED YELLOW RED
IN: wif lug dax OUT: PURPLE YELLOW
IN: kiki OUT: PINK
IN: kiki gazzer OUT: PINK PINK
IN: kiki dax lug dax OUT: PINK YELLOW YELLOW
IN: dax fep lug kiki OUT: YELLOW RED PINK
IN: wif lug kiki OUT: PURPLE PINK
IN: fep tufa kiki OUT: PINK RED
IN: wif kiki wif kiki tufa fep OUT: PURPLE PINK PURPLE RED PINK
IN: dax tufa fep OUT: RED YELLOW
IN: dax fep OUT: YELLOW RED
IN: kiki lug kiki OUT: PINK PINK

*QUERY*
IN: kiki kiki gazzer OUT: PINK PINK PINK
IN: dax OUT: YELLOW
IN: wif lug fep OUT: PURPLE RED
IN: wif wif dax OUT: PURPLE PURPLE YELLOW
IN: wif gazzer OUT: PURPLE PURPLE
IN: wif kiki gazzer OUT: PURPLE PINK PINK
IN: kiki lug wif OUT: PINK PURPLE
IN: wif OUT: PURPLE
IN: wif tufa fep OUT: RED PURPLE
IN: fep lug wif OUT: RED PURPLE

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