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

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

*GRAMMAR*
wif -> YELLOW 
 dax -> RED 
 blicket -> BLUE 
 lug -> PURPLE 
 u1 fep u2 -> [u1] [u2] [u2] [u2] [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] 
 x1 tufa u1 -> [u1] [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 