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

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

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