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

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

*GRAMMAR*
kiki -> PURPLE 
 dax -> GREEN 
 zup -> BLUE 
 wif -> RED 
 x1 fep -> [x1] [x1] 
 x1 lug x2 -> [x2] [x2] [x1] 
 u1 gazzer u2 -> [u2] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 