*SUPPORT*
IN: dax dax lug kiki OUT: GREEN YELLOW GREEN GREEN YELLOW
IN: kiki kiki lug dax OUT: YELLOW GREEN YELLOW YELLOW GREEN
IN: dax tufa OUT: GREEN PURPLE
IN: tufa gazzer blicket tufa lug dax OUT: PURPLE BLUE GREEN PURPLE PURPLE GREEN
IN: dax wif dax OUT: GREEN GREEN GREEN
IN: blicket lug blicket OUT: BLUE BLUE BLUE BLUE
IN: blicket OUT: BLUE
IN: blicket lug tufa OUT: PURPLE BLUE BLUE PURPLE
IN: tufa gazzer kiki kiki OUT: PURPLE YELLOW YELLOW
IN: blicket kiki OUT: BLUE YELLOW
IN: blicket dax wif tufa OUT: BLUE GREEN BLUE GREEN PURPLE
IN: dax dax lug blicket OUT: GREEN BLUE GREEN GREEN BLUE
IN: tufa kiki lug dax OUT: PURPLE GREEN YELLOW YELLOW GREEN
IN: kiki dax OUT: YELLOW GREEN

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

*GRAMMAR*
tufa -> PURPLE 
 kiki -> YELLOW 
 dax -> GREEN 
 blicket -> BLUE 
 u1 lug u2 -> [u2] [u1] [u1] [u2] 
 x1 gazzer x2 -> [x1] [x2] 
 x1 wif u1 -> [x1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 