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

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

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