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

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

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