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

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

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