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

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

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