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

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

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