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

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

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