println("BUG a", hash)
		return
	}

	m = md5.New()
	io.WriteString(m, gettysburg)
	hash = fmt.Sprintf("%x", m.Sum(nil))
	if hash != "d7ec5d9d47a4d166091e8d9ebd7ea0aa" {
		println("BUG gettysburg", hash)
		println(len(gettysburg))
		fmt.Println(gettysburg)
		return
	}