*SUPPORT*
IN: dax fep OUT: BLUE BLUE
IN: dax OUT: BLUE
IN: wif blicket kiki OUT: YELLOW GREEN YELLOW
IN: zup OUT: PURPLE
IN: zup wif blicket kiki OUT: PURPLE YELLOW GREEN PURPLE YELLOW
IN: wif fep OUT: YELLOW YELLOW
IN: wif OUT: YELLOW
IN: wif tufa dax OUT: BLUE YELLOW
IN: kiki tufa zup OUT: PURPLE GREEN
IN: dax blicket dax OUT: BLUE BLUE BLUE
IN: kiki tufa dax OUT: BLUE GREEN
IN: wif tufa zup blicket wif OUT: PURPLE YELLOW YELLOW PURPLE YELLOW
IN: kiki OUT: GREEN
IN: wif tufa zup OUT: PURPLE YELLOW

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

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