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

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

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