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

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

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