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

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

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