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

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

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