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

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

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