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

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

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