bool isBetweenStartAndSeparation = false;
string fieldInfoText = string.Empty;
int startIndex = 0;
IEnumerable<Paragraph> paragraphs = document.EnumerateChildrenOfType<Paragraph>();
foreach (Paragraph paragraph in paragraphs)
{
	foreach (InlineBase inline in paragraph.Inlines.ToList())
	{
		if (inline is FieldCharacter)
		{
			FieldCharacter fieldCharacter = inline as FieldCharacter;
			if (fieldCharacter.FieldCharacterType == FieldCharacterType.Separator)
			{
				isBetweenStartAndSeparation = false;
				Run run = new Run(this.document)
				{
					Text = fieldInfoText
				};

				paragraph.Inlines.Insert(startIndex, run);
			}
			else if (fieldCharacter.FieldCharacterType == FieldCharacterType.Start)
			{
				isBetweenStartAndSeparation = true;
				startIndex = paragraph.Inlines.IndexOf(inline) + 1;
				fieldInfoText = fieldCharacter.FieldInfo.GetCode().Trim().ToLowerInvariant();
			}
		}
		else if (isBetweenStartAndSeparation)
		{
			paragraph.Inlines.Remove(inline);
		}
	}
}