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

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

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