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

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

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