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

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

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