*SUPPORT*
IN: fep zup wif wif lug fep OUT: YELLOW GREEN YELLOW GREEN
IN: fep lug tufa OUT: RED YELLOW
IN: fep OUT: YELLOW
IN: fep lug wif OUT: GREEN YELLOW
IN: tufa zup fep kiki OUT: RED YELLOW YELLOW YELLOW
IN: tufa wif kiki OUT: RED GREEN GREEN GREEN
IN: gazzer fep zup gazzer lug tufa OUT: BLUE YELLOW RED BLUE
IN: gazzer zup fep lug fep OUT: BLUE YELLOW YELLOW
IN: gazzer gazzer zup fep lug fep OUT: BLUE BLUE YELLOW YELLOW
IN: tufa zup gazzer lug wif OUT: RED GREEN BLUE
IN: fep fep wif kiki OUT: YELLOW YELLOW GREEN GREEN GREEN
IN: fep wif kiki OUT: YELLOW GREEN GREEN GREEN
IN: wif lug fep OUT: YELLOW GREEN
IN: tufa tufa kiki OUT: RED RED RED RED

*QUERY*
IN: wif zup tufa lug tufa OUT: GREEN RED RED
IN: tufa zup gazzer lug fep OUT: RED YELLOW BLUE
IN: fep lug fep OUT: YELLOW YELLOW
IN: fep tufa OUT: YELLOW RED
IN: fep fep kiki OUT: YELLOW YELLOW YELLOW YELLOW
IN: fep kiki OUT: YELLOW YELLOW YELLOW
IN: gazzer tufa kiki OUT: BLUE RED RED RED
IN: wif lug gazzer OUT: BLUE GREEN
IN: gazzer OUT: BLUE
IN: wif OUT: GREEN

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