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

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

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