These are common typo's, and the documentation on "heredoc" is terse for a beginner, and there is nothing but syntax here - so I'll help out.

For c11case2a.cgi, change the Print statement to lower case, and quote the "heredoc" :

print << "addressForm";
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For the c11case2b - it appears you have used a word processor to edit the script - and that has placed non-standard double quotes instead of plain ones.

Using a simple text editor and fixing the quotes should get you started.