*SUPPORT*
IN: tufa lug lug OUT: BLUE GREEN GREEN
IN: zup dax zup OUT: YELLOW YELLOW YELLOW
IN: tufa dax blicket OUT: PURPLE BLUE PURPLE
IN: zup OUT: YELLOW
IN: lug zup zup OUT: GREEN YELLOW YELLOW
IN: tufa lug gazzer gazzer OUT: BLUE GREEN BLUE GREEN BLUE GREEN BLUE GREEN
IN: tufa zup OUT: BLUE YELLOW
IN: lug gazzer OUT: GREEN GREEN
IN: zup gazzer gazzer gazzer OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: lug dax tufa OUT: BLUE GREEN BLUE
IN: tufa gazzer OUT: BLUE BLUE
IN: lug OUT: GREEN
IN: zup dax lug OUT: GREEN YELLOW GREEN
IN: blicket dax lug wif tufa gazzer OUT: BLUE GREEN PURPLE GREEN BLUE GREEN PURPLE GREEN

*QUERY*
IN: blicket OUT: PURPLE
IN: tufa wif tufa OUT: BLUE BLUE
IN: blicket tufa OUT: PURPLE BLUE
IN: tufa dax tufa gazzer OUT: BLUE BLUE BLUE BLUE BLUE BLUE
IN: zup zup lug tufa OUT: YELLOW YELLOW GREEN BLUE
IN: lug dax blicket OUT: PURPLE GREEN PURPLE
IN: zup gazzer OUT: YELLOW YELLOW
IN: zup blicket zup OUT: YELLOW PURPLE YELLOW
IN: blicket zup wif blicket gazzer OUT: PURPLE PURPLE YELLOW PURPLE PURPLE YELLOW
IN: zup blicket dax zup OUT: YELLOW YELLOW PURPLE YELLOW

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