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

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

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