This function adds a sing state in the total states
        Args:
            states (list): The current states
        Returns:
            None

def _add_sink_state(self, states):
        """
        This function adds a sing state in the total states
        Args:
            states (list): The current states
        Returns:
            None
        """
        cleared = []
        for i in range(0, 128):
            cleared.append(-1)
        states.append(cleared)