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

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

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