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

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

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