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

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

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