title: How to extract last values in regex in a string
body: <p>I want to extract the last value from this string
  JJ 11 J 1111 ABCD EFGH­ HIJK.S LMNOPQR 1234 55555 STUV ABCD EFGH 6789 1011. I tried (\d{4}) and (?&lt;=\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>\s.</em>\s.<em>).</em> but if the middle value some how changes this does not work.</p>