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

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

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