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

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

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