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

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

*GRAMMAR*
lug -> PURPLE 
 tufa -> RED 
 zup -> GREEN 
 gazzer -> BLUE 
 u1 dax u2 -> [u1] [u2] 
 u1 fep u2 -> [u2] [u1] 
 x1 wif x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 