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

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

*GRAMMAR*
fep -> YELLOW 
 lug -> BLUE 
 wif -> PURPLE 
 gazzer -> RED 
 u1 dax -> [u1] [u1] 
 x1 tufa x2 -> [x1] [x2] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 