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

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

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