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

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

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