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diff --git a/passes/tests/flowmap/flow.v b/passes/tests/flowmap/flow.v
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+// Exact reproduction of Figure 2(a) from 10.1109/43.273754.
+module top(...);
+	input a,b,c,d,e,f;
+	wire nA = b&c;
+	wire A = !nA;
+	wire nB = c|d;
+	wire B = !nB;
+	wire nC = e&f;
+	wire C = !nC;
+	wire D = A|B;
+	wire E = a&D;
+	wire nF = D&C;
+	wire F = !nF;
+	wire nG = F|B;
+	wire G = !nG;
+	wire H = a&F;
+	wire I = E|G;
+	wire J = G&C;
+	wire np = H&I;
+	output p = !np;
+	output q = A|J;
+endmodule