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

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

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