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

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

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