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

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

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