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

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

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