?A
<elt attr="" attr2="?" attr3="Surrogate ?? Char"></elt>
<cdata> This is ? a test. ??</cdata>
 This is ? a test. ??
&lt;
 This is ? a test. ??
 This is ? a test. ??
&gt;
<
 This is ? a test. ??
 This is ? a test. ??
>
&lt;
 This is ? a test. ??
 This is ? a test. ??
&gt;
<elt attr="" attr2="?" attr3="Surrogate ?? Char"></elt>
<cdata> This is ? a test. ??</cdata>
 This is ? a test. ??
?A