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

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

*GRAMMAR*
zup -> GREEN 
 dax -> YELLOW 
 tufa -> RED 
 fep -> BLUE 
 u1 wif -> [u1] [u1] 
 x1 gazzer x2 -> [x1] [x1] [x2] 
 u1 kiki -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 