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

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

*GRAMMAR*
tufa -> PURPLE 
 fep -> BLUE 
 wif -> RED 
 kiki -> YELLOW 
 x1 zup -> [x1] [x1] 
 u1 dax u2 -> [u2] [u1] 
 x1 lug x2 -> [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 