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

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

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