def A2Medium(picture):
  picA = duplicatePicture(picture)
  w = getWidth(picA)
  h = getHeight(picA)
  picB = tintPic(picture)
  picC = tintPic(picture)
  picD = tintPic(picture)
  picFinal = makeEmptyPicture(w*2,h*2)
  for pixl in getAllPixels(picA):
    x = getX(pixl)
    y = getY(pixl)
    colourA = getColor(pixl)
    colourB = getColor(getPixelAt(picB,x,y))
    colourC = getColor(getPixelAt(picC,x,y))
    colourD = getColor(getPixelAt(picD,x,y))
    setColor(getPixelAt(picFinal,x,y),colourA)
    setColor(getPixelAt(picFinal,x+w,y),colourB)
    setColor(getPixelAt(picFinal,x,y+h),colourC)
    setColor(getPixelAt(picFinal,x+w,y+h),colourD)
  show(picFinal)