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

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

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