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

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

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