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

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

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