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

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

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