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

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

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