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

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

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