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

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

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