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

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

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