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

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

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