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

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

*GRAMMAR*
wif -> BLUE 
 fep -> RED 
 kiki -> PURPLE 
 tufa -> GREEN 
 x1 zup x2 -> [x2] [x1] [x1] [x1] [x2] [x1] 
 u1 gazzer -> [u1] [u1] 
 u1 dax u2 -> [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 