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

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

*GRAMMAR*
gazzer -> BLUE 
 wif -> GREEN 
 zup -> RED 
 lug -> YELLOW 
 u1 blicket -> [u1] [u1] 
 u1 fep -> [u1] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 