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

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

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