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

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

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