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

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

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