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

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

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