#!/usr/bin/perl
$_ = <> until ($mode,$file) = /^begin\s*(\d*)\s*(\S*)/;
open(OUT,"> $file") if $file ne "";
while (<>) {
	last if /^end/;
	next if /[a-z]/;
	next unless int((((ord() - 32) & 077) + 2) / 3) ==
		int(length() / 4);
	print OUT unpack("u", $_);
}
chmod oct($mode), $file;
