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

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

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