*SUPPORT*
IN: wif tufa kiki OUT: RED YELLOW
IN: zup tufa zup OUT: BLUE BLUE
IN: wif OUT: RED
IN: zup tufa wif OUT: BLUE RED
IN: kiki fep zup dax zup OUT: BLUE YELLOW BLUE
IN: zup tufa kiki OUT: BLUE YELLOW
IN: kiki tufa wif OUT: YELLOW RED
IN: zup fep zup OUT: BLUE BLUE
IN: zup dax wif OUT: BLUE RED
IN: wif dax gazzer OUT: RED PURPLE
IN: kiki OUT: YELLOW
IN: kiki tufa kiki OUT: YELLOW YELLOW
IN: zup fep kiki OUT: YELLOW BLUE
IN: zup fep gazzer dax zup OUT: PURPLE BLUE BLUE

*QUERY*
IN: wif kiki tufa kiki OUT: RED YELLOW YELLOW
IN: gazzer tufa wif OUT: PURPLE RED
IN: wif fep kiki OUT: YELLOW RED
IN: gazzer zup fep kiki OUT: PURPLE YELLOW BLUE
IN: wif tufa gazzer OUT: RED PURPLE
IN: kiki kiki fep zup OUT: YELLOW BLUE YELLOW
IN: wif kiki OUT: RED YELLOW
IN: wif fep zup OUT: BLUE RED
IN: gazzer dax gazzer OUT: PURPLE PURPLE
IN: zup OUT: BLUE

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