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

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

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