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

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

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