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

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

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