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

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

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