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

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

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