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

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

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