find =  etree.XPath("//w:p//.//*[local-name() = 'ins']//text()" ,namespaces={'w':"http://schemas.openxmlformats.org/wordprocessingml/2006/main"})

inserted_list_1=[]
for p in lxml_tree.findall('.//{' + w + '}p'):
    inserted_list_1.append([t.text for t in p.findall('.//{' + w + '}ins')])