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

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

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