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

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

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