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

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

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