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

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

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