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

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

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