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

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

*GRAMMAR*
wif -> GREEN 
 tufa -> YELLOW 
 kiki -> PURPLE 
 gazzer -> BLUE 
 x1 zup u1 -> [x1] [u1] [x1] 
 u1 fep x1 -> [u1] [u1] [x1] 
 x1 lug x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 