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

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

*GRAMMAR*
lug -> PURPLE 
 gazzer -> RED 
 zup -> GREEN 
 dax -> BLUE 
 u1 wif u2 -> [u2] [u1] [u1] [u1] [u2] [u2] 
 u1 fep -> [u1] [u1] [u1] 
 x1 tufa x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 