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

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

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