User:Cyrek
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Contributions from behind the same firewall (1) - Between Mid-2001 and Mid-2007, many - though not all - contributions from this IP, were also by this user.
Contributions from behind the same firewall (2) - From Mid-2007 to Early 2014, a number of contributions from this IP are also by this user... although other, more dubious, modifications are known to have been 'contributed' by other parties on the same network.