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

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

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