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

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

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