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

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

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