%%{
  init: {
    "sequence": {
      "actorFontFamily": "monospace",
      "actorFontWeight": "bold",
      "messageFontFamily": "monospace",
      "messageFontWeight": "bold",
      "noteFontWeight": "bolder"
    }
  }
}%%
graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

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