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

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

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