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

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

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