Another try

        for i, r in enumerate(new_runs):

            para.insert(index + i, r)

    def split_run_by_regex(para, run, pattern):

        import copy

        try:

            index = list(para).index(run)

        except ValueError:

            return

        text_node = run.find(f".//{{{ns['w']}}}t")

        if text_node is None or not text_node.text:

            return

        text = text_node.text

        parts = re.split(pattern, text)

        if len(parts) == 1:

            return

        run_props = run.find(f".//{{{ns['w']}}}rPr")

        new_runs = []

        def create_run(txt):

            r = OxmlElement('w:r')

            if run_props is not None:

                r.append(copy.deepcopy(run_props))

            t = OxmlElement('w:t')

            t.set(f"{{{ns['xml']}}}space", "preserve")

            t.text = txt

            r.append(t)

            return r

        for part in parts:

            if part:

                new_runs.append(create_run(part))

        para.remove(run)

        for i, r in enumerate(new_runs):

            para.insert(index + i, r)

    for para in paragraphs:

        # Skip if already processed

        if id(para) in processed_paras:

            if child.tag == f"{{{ns['w']}}}r":

                text_elem = child.find('.//w:t', namespaces=ns)

                if text_elem is not None and text_elem.text:

                if is_start_of_line and text_elem is not None and text_elem.text:

                    text_stripped = text_elem.text.lstrip()

                    is_numbered_candidate = bool(re.match(r'^\d+\.\s', text_stripped))

                    is_bullet_candidate = text_stripped.startswith('- ')

                    if is_numbered_candidate or (is_bullet_candidate and is_start_of_line):

                    if is_numbered_candidate or is_bullet_candidate:

                        list_item_runs.append((idx, child, text_elem))

                # Update state