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

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

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