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  <h1>Source code for block_zoo.op.Combination</h1><div class="highlight"><pre>
<span></span><span class="c1"># Copyright (c) Microsoft Corporation. All rights reserved.</span>
<span class="c1"># Licensed under the MIT license.</span>

<span class="kn">import</span> <span class="nn">torch</span>
<span class="kn">import</span> <span class="nn">torch.nn</span> <span class="k">as</span> <span class="nn">nn</span>
<span class="kn">import</span> <span class="nn">torch.nn.functional</span> <span c