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

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

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