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

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

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