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

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

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