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

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

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