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

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

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