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

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

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