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

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

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