   subgraph A
    b-->B
    a-->c
    end
    subgraph B
      c
    end
    </pre>
    <pre class="mermaid2" style="width: 50%; height: 20%">
sequenceDiagram
Alice->Bob: Hello Bob, how are you?
Note over Alice,Bob: Looks
Note over Bob,Alice: Looks back
    </pre>

    <script type="module">
      import mermaid from './mermaid.esm.mjs';
      mermaid.parseError = function (err, hash) {
        // console.error('Mermaid error: ', err);
      };
      mermaid.initialize({
        // theme: 'forest',
        