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

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

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