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

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

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