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

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

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