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

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

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