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

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

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