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

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

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