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

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

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