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

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

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