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

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

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