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

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

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