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

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

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