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In this paper, we study signal alignment resulting in maximum peak interconnect coupling noise. We consider three cases. In the first one, we assume that arbitrary arrival times of input signals are feasible. In the second case, we assume that timing windows are given for each aggressor input. The victim is quiet for the above two cases. In the third case, the victim net has a propagated noise from the previous stage and timing windows are given for both the propagating noise and the aggressor inputs. We propose a simple procedure to find aggressor alignment for worst-case coupling in all the cases.