*SUPPORT*
IN: dax kiki blicket OUT: RED RED RED RED RED RED
IN: fep blicket OUT: YELLOW YELLOW
IN: fep zup wif zup blicket OUT: YELLOW PURPLE PURPLE YELLOW PURPLE PURPLE
IN: lug wif fep OUT: YELLOW BLUE
IN: dax blicket OUT: RED RED
IN: lug wif zup blicket OUT: PURPLE BLUE PURPLE BLUE
IN: fep OUT: YELLOW
IN: lug wif dax blicket OUT: RED BLUE RED BLUE
IN: dax OUT: RED
IN: lug wif zup OUT: PURPLE BLUE
IN: zup kiki blicket OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: dax wif dax blicket OUT: RED RED RED RED
IN: lug blicket blicket OUT: BLUE BLUE BLUE BLUE
IN: zup OUT: PURPLE

*QUERY*
IN: dax zup wif dax OUT: RED RED PURPLE
IN: dax wif fep blicket OUT: YELLOW RED YELLOW RED
IN: zup wif zup OUT: PURPLE PURPLE
IN: dax wif dax OUT: RED RED
IN: fep kiki OUT: YELLOW YELLOW YELLOW
IN: dax kiki OUT: RED RED RED
IN: zup wif fep OUT: YELLOW PURPLE
IN: dax wif fep OUT: YELLOW RED
IN: lug wif dax OUT: RED BLUE
IN: lug blicket OUT: BLUE BLUE

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