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

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

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