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

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

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