*SUPPORT*
IN: dax blicket gazzer OUT: RED GREEN
IN: kiki blicket gazzer zup gazzer OUT: GREEN YELLOW GREEN
IN: wif fep dax OUT: PURPLE RED
IN: gazzer blicket wif OUT: GREEN PURPLE
IN: kiki fep dax OUT: YELLOW RED
IN: gazzer zup gazzer zup dax OUT: RED GREEN GREEN
IN: dax OUT: RED
IN: gazzer blicket dax OUT: GREEN RED
IN: kiki blicket dax OUT: YELLOW RED
IN: kiki kiki zup kiki OUT: YELLOW YELLOW YELLOW
IN: wif blicket gazzer OUT: PURPLE GREEN
IN: dax blicket dax zup gazzer OUT: GREEN RED RED
IN: wif fep kiki zup dax OUT: RED PURPLE YELLOW
IN: kiki blicket kiki OUT: YELLOW YELLOW

*QUERY*
IN: wif fep gazzer OUT: PURPLE GREEN
IN: dax blicket kiki OUT: RED YELLOW
IN: gazzer blicket wif zup gazzer OUT: GREEN GREEN PURPLE
IN: gazzer zup dax OUT: RED GREEN
IN: wif zup dax OUT: RED PURPLE
IN: kiki zup wif OUT: PURPLE YELLOW
IN: gazzer fep dax OUT: GREEN RED
IN: dax fep dax OUT: RED RED
IN: kiki OUT: YELLOW
IN: kiki dax blicket gazzer OUT: YELLOW RED GREEN

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