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

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

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