*SUPPORT*
IN: wif OUT: BLUE
IN: dax zup OUT: GREEN GREEN
IN: blicket tufa OUT: YELLOW YELLOW
IN: wif wif fep dax OUT: BLUE GREEN BLUE
IN: kiki OUT: RED
IN: wif dax tufa OUT: BLUE GREEN GREEN
IN: dax tufa OUT: GREEN GREEN
IN: kiki tufa OUT: RED RED
IN: dax kiki kiki OUT: GREEN RED RED
IN: dax blicket OUT: GREEN YELLOW
IN: dax fep kiki OUT: RED GREEN
IN: wif blicket fep wif OUT: BLUE BLUE YELLOW
IN: blicket OUT: YELLOW
IN: wif fep blicket OUT: YELLOW BLUE

*QUERY*
IN: dax OUT: GREEN
IN: kiki blicket zup OUT: RED YELLOW YELLOW
IN: kiki wif fep dax OUT: RED GREEN BLUE
IN: blicket zup OUT: YELLOW YELLOW
IN: kiki wif zup OUT: RED BLUE BLUE
IN: blicket kiki tufa OUT: YELLOW RED RED
IN: dax dax zup OUT: GREEN GREEN GREEN
IN: blicket kiki wif zup OUT: YELLOW RED BLUE BLUE
IN: wif tufa OUT: BLUE BLUE
IN: dax fep dax OUT: GREEN GREEN

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