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

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

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