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

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

*GRAMMAR*
gazzer -> BLUE 
 dax -> PINK 
 wif -> YELLOW 
 tufa -> RED 
 x1 lug x2 -> [x1] [x2] 
 u1 zup u2 -> [u1] [u1] [u2] 
 u1 blicket u2 -> [u2] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 