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

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

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