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

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

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