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

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

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