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

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

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