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

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

*GRAMMAR*
wif -> RED 
 zup -> PURPLE 
 fep -> YELLOW 
 tufa -> BLUE 
 u1 kiki u2 -> [u1] [u2] 
 u1 dax u2 -> [u2] [u1] 
 x1 lug x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 