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

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

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