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

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

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