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

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

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