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

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

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