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

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

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