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

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

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