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

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

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