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

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

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