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

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

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