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

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

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