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

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

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