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

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

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