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

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

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