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

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

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