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

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

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