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

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

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