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

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

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