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

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

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