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

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

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