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

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

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