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

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

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