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

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

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