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

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

*GRAMMAR*
wif -> BLUE 
 lug -> GREEN 
 tufa -> RED 
 kiki -> YELLOW 
 u1 gazzer u2 -> [u2] [u2] [u1] 
 x1 fep -> [x1] [x1] 
 u1 zup -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 