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

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

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