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

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

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