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

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

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