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

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

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