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

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

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