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

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

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