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

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

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