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

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

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