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

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

*GRAMMAR*
kiki -> RED 
 fep -> PURPLE 
 dax -> BLUE 
 blicket -> YELLOW 
 u1 lug -> [u1] [u1] 
 x1 tufa x2 -> [x2] [x2] [x2] [x2] [x2] [x1] 
 x1 wif u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 