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

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

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