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

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

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