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

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

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