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

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

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