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

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

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