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

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

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