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

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

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