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

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

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