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

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

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