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

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

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