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

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

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