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

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

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