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

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

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