my $ugly_regex = '!
              /         # match /
              \w*?      # match optional minimum word characters (/dir)
              /?        # match single optional /
              \w*?      # match optional minimum word characters (/dir/dir)
              /?        # match single optional /
              \w*?      # match optional minimum word characters (/dir/dir/dir)
              /?        # match single optional /
              \w*?      # match optional minimum word characters (/dir/dir/dir/dir)
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d+?      # match 1 or more numbers
              \s?       # match a single optional whitespace
              \d*?      # match 0 or more numbers
              \s?       # match a single optional whitespace
              \d*?      # match 0 or more numbers
             !x';