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

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

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