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

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

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