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

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

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