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

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

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