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

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

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