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

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

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