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

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

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