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

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

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