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

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

*GRAMMAR*
fep -> YELLOW 
 dax -> PURPLE 
 tufa -> BLUE 
 wif -> RED 
 x1 gazzer x2 -> [x1] [x2] 
 x1 zup u1 -> [u1] [x1] 
 u1 blicket x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 