*SUPPORT*
IN: wif lug OUT: YELLOW PURPLE
IN: wif wif zup OUT: YELLOW YELLOW YELLOW YELLOW
IN: wif zup OUT: YELLOW YELLOW YELLOW
IN: lug dax wif OUT: PURPLE YELLOW
IN: wif dax wif OUT: YELLOW YELLOW
IN: fep dax lug OUT: RED PURPLE
IN: wif tufa dax wif OUT: YELLOW BLUE YELLOW
IN: fep dax wif OUT: RED YELLOW
IN: fep zup OUT: RED RED RED
IN: tufa zup gazzer fep tufa OUT: RED BLUE BLUE BLUE BLUE
IN: fep dax fep OUT: RED RED
IN: lug zup OUT: PURPLE PURPLE PURPLE
IN: lug lug zup OUT: PURPLE PURPLE PURPLE PURPLE
IN: tufa zup OUT: BLUE BLUE BLUE

*QUERY*
IN: wif lug tufa gazzer wif dax lug OUT: YELLOW PURPLE YELLOW PURPLE BLUE
IN: tufa OUT: BLUE
IN: tufa dax tufa OUT: BLUE BLUE
IN: fep wif wif OUT: RED YELLOW YELLOW
IN: fep OUT: RED
IN: wif OUT: YELLOW
IN: lug tufa tufa zup OUT: PURPLE BLUE BLUE BLUE BLUE
IN: lug gazzer wif zup gazzer wif OUT: YELLOW YELLOW YELLOW YELLOW PURPLE
IN: tufa dax wif OUT: BLUE YELLOW
IN: fep dax tufa OUT: RED BLUE

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