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

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

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