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

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

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