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

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

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