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

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

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