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

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

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