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

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

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