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

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

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