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

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

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