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

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

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