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

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

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