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

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

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