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

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

*GRAMMAR*
lug -> BLUE 
 tufa -> GREEN 
 kiki -> PURPLE 
 fep -> YELLOW 
 x1 dax x2 -> [x1] [x2] 
 x1 gazzer u1 -> [x1] [u1] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 