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Answers and rating deltas for

Regular Expression. Is it posible to match (a or b) and (a or c) and (a or d) but not aaa?

Author Votes Δ
Toby Speight 5 +1.91
vks 1 -0.52
Mayur Koshti 0 -1.38
Last visited: Mar 1, 2016, 7:44:43 PM