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

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

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