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

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

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