private boolean isBinaryOp(String string) 
	{
		if(string.replace(" ", "").equals("add") || string.replace(" ", "").equals("sub") || string.replace(" ", "").equals("mult") 
				|| string.replace(" ", "").equals("div") || string.replace(" ", "").equals("and") || string.replace(" ", "").equals("or")
				|| string.replaceAll("\\s", "").equals("addi"))
			return true;
		else
			return false;
	}