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

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

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