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

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

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