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

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

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