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

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

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