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

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

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