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

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

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