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

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

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