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

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

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