*SUPPORT*
IN: dax wif wif wif blicket kiki OUT: BLUE PINK GREEN GREEN GREEN
IN: kiki tufa wif tufa zup OUT: BLUE GREEN GREEN PURPLE PURPLE
IN: kiki dax kiki dax blicket wif OUT: GREEN BLUE PINK BLUE PINK
IN: kiki zup blicket wif OUT: GREEN BLUE PURPLE
IN: dax lug zup OUT: PINK PINK PURPLE PINK
IN: kiki lug zup blicket dax tufa kiki OUT: BLUE BLUE PINK PURPLE BLUE BLUE BLUE
IN: kiki tufa zup OUT: BLUE PURPLE PURPLE
IN: wif OUT: GREEN
IN: wif tufa zup OUT: GREEN PURPLE PURPLE
IN: zup tufa dax OUT: PURPLE PINK PINK
IN: wif lug kiki dax blicket zup blicket zup OUT: GREEN GREEN PURPLE PURPLE BLUE PINK GREEN
IN: wif tufa wif tufa zup OUT: GREEN GREEN GREEN PURPLE PURPLE
IN: zup OUT: PURPLE
IN: dax blicket wif OUT: GREEN PINK

*QUERY*
IN: wif dax OUT: GREEN PINK
IN: wif tufa dax OUT: GREEN PINK PINK
IN: wif wif tufa wif tufa kiki tufa dax OUT: GREEN GREEN GREEN GREEN BLUE BLUE PINK PINK
IN: kiki tufa kiki blicket dax OUT: PINK BLUE BLUE BLUE
IN: kiki OUT: BLUE
IN: zup wif zup blicket zup OUT: PURPLE PURPLE GREEN PURPLE
IN: wif tufa wif OUT: GREEN GREEN GREEN
IN: wif tufa dax tufa wif OUT: GREEN PINK PINK GREEN GREEN
IN: dax blicket dax OUT: PINK PINK
IN: dax OUT: PINK

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