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

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

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