*SUPPORT*
IN: lug tufa lug lug wif OUT: PINK PINK PINK PINK
IN: fep lug dax OUT: BLUE PINK YELLOW
IN: lug OUT: PINK
IN: fep dax wif tufa dax kiki zup lug OUT: YELLOW PINK RED BLUE YELLOW YELLOW
IN: kiki OUT: RED
IN: kiki dax OUT: RED YELLOW
IN: kiki fep zup kiki OUT: RED RED BLUE
IN: lug wif OUT: PINK PINK
IN: lug fep tufa kiki dax OUT: RED YELLOW PINK BLUE
IN: kiki zup dax OUT: YELLOW RED
IN: kiki zup fep OUT: BLUE RED
IN: dax OUT: YELLOW
IN: kiki zup lug OUT: PINK RED
IN: fep wif tufa dax OUT: YELLOW BLUE BLUE

*QUERY*
IN: lug zup fep OUT: BLUE PINK
IN: dax wif OUT: YELLOW YELLOW
IN: fep OUT: BLUE
IN: dax lug OUT: YELLOW PINK
IN: kiki fep OUT: RED BLUE
IN: kiki wif OUT: RED RED
IN: dax kiki lug lug wif tufa dax wif OUT: YELLOW YELLOW YELLOW RED PINK PINK PINK
IN: dax zup lug OUT: PINK YELLOW
IN: fep zup dax OUT: YELLOW BLUE
IN: fep wif OUT: BLUE BLUE

*GRAMMAR*
fep -> BLUE 
 kiki -> RED 
 lug -> PINK 
 dax -> YELLOW 
 x1 tufa x2 -> [x2] [x1] 
 u1 wif -> [u1] [u1] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 