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

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

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