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

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

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