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

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

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