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

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

*GRAMMAR*
dax -> RED 
 wif -> PURPLE 
 gazzer -> GREEN 
 lug -> BLUE 
 u1 tufa u2 -> [u2] [u1] 
 x1 fep -> [x1] [x1] [x1] 
 x1 zup x2 -> [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 