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

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

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