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

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

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