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

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

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