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

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

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