Put the list of files into an array and use FOR EACH
code:
$a[0]='aaa.txt'
$a[1]='bbb.txt'
for each $file in $a
  if not exist('c:\temp\+$a)
    copy 'd:\temp\'+$a 'c:\temp\'+$a
  endif
next
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There are two types of vessels, submarines and targets.