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

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

*GRAMMAR*
wif -> PINK 
 fep -> YELLOW 
 blicket -> BLUE 
 dax -> RED 
 u1 tufa -> [u1] [u1] 
 x1 zup x2 -> [x1] [x2] 
 u1 kiki -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 