 disc; ">
<li class="listitem">
            sub_match occupies more memory resulting in complex expressions running
            out of memory or stack space more quickly during matching.
          </li>
<li class="listitem">
            The matching algorithms are less efficient at handling some features
            (independent sub-expressions for example), even when match_extra is not
            used.
          </li>
<li class="listitem">
            The matching algorithms are much less efficient (i.e. 