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

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

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