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

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

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