The operation method of _speak_as method for no-punctuation.

        :param content: The text content of element.
        :type content: str
        :param index: The index of pattern in text content of element.
        :type index: int
        :param children: The children of element.
        :type children: list(hatemile.util.html.htmldomelement.HTMLDOMElement)

def _operation_speak_as_no_punctuation(self, content, index, children):
        """
        The operation method of _speak_as method for no-punctuation.

        :param content: The text content of element.
        :type content: str
        :param index: The index of pattern in text content of element.
        :type index: int
        :param children: The children of element.
        :type children: list(hatemile.util.html.htmldomelement.HTMLDOMElement)
        """

        if index != 0:
            children.append(self._create_content_element(
                content[0:index],
                'no-punctuation'
            ))
        children.append(self._create_visual_content_element(
            content[index:(index + 1)],
            'no-punctuation'
        ))

        return children