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

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

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