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

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

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