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

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

*GRAMMAR*
dax -> PURPLE 
 zup -> YELLOW 
 lug -> BLUE 
 wif -> GREEN 
 u1 fep x1 -> [x1] [x1] [u1] 
 x1 gazzer x2 -> [x2] [x2] [x1] 
 u1 kiki u2 -> [u2] [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 