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

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

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