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

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

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