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

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

*GRAMMAR*
tufa -> GREEN 
 wif -> PURPLE 
 blicket -> BLUE 
 fep -> RED 
 x1 lug -> [x1] [x1] 
 x1 zup x2 -> [x2] [x1] 
 u1 dax u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 