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

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

*GRAMMAR*
wif -> YELLOW 
 fep -> PURPLE 
 kiki -> BLUE 
 zup -> GREEN 
 x1 blicket -> [x1] [x1] 
 u1 gazzer u2 -> [u1] [u2] 
 x1 dax x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 