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

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

*GRAMMAR*
lug -> BLUE 
 kiki -> RED 
 tufa -> GREEN 
 gazzer -> YELLOW 
 u1 dax u2 -> [u2] [u1] 
 x1 fep x2 -> [x2] [x1] [x2] [x1] [x1] [x2] 
 x1 zup x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 