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

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

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