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

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

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