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

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

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