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

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

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