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

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

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