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

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

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