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

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

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