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

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

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