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

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

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