diff --git a/wai-aria/subtree/treeitems.tentative.html b/wai-aria/subtree/treeitems.tentative.html
new file mode 100644
index 00000000000000..8ad6d2cae91aa6
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+++ b/wai-aria/subtree/treeitems.tentative.html
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+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/wai-aria/scripts/aria-utils.js"></script>
+
+<div id="tree" role="tree">
+  <div role="treeitem" aria-level="1" aria-posinset="1" aria-setsize="2">Fruits</div>
+  <div role="treeitem" aria-level="2" aria-posinset="1" aria-setsize="3">Apples</div>
+  <div role="treeitem" aria-level="2" aria-posinset="2" aria-setsize="3">Pears</div>
+  <div role="treeitem" aria-level="2" aria-posinset="3" aria-setsize="3">Oranges</div>
+  <div role="treeitem" aria-level="1" aria-posinset="2" aria-setsize="2">Vegetables</div>
+  <div role="treeitem" aria-level="2" aria-posinset="1" aria-setsize="3">Carrots</div>
+  <div role="treeitem" aria-level="2" aria-posinset="2" aria-setsize="3">Broccoli</div>
+  <div role="treeitem" aria-level="2" aria-posinset="3" aria-setsize="3">Spinach</div>
+</div>
+
+<script>
+
+AriaUtils.verifyAccessibilitySubtree("#tree", {
+  role: "tree",
+  children: [
+    { role: "treeitem", label: "Fruits", level: 1,
+      children: [
+        { role: "treeitem", label: "Apples", level: 2, children: [] },
+        { role: "treeitem", label: "Pears", level: 2, children: [] },
+        { role: "treeitem", label: "Oranges", level: 2, children: [] },
+      ],
+    },
+    { role: "treeitem", label: "Vegetables", level: 1,
+      children: [
+        { role: "treeitem", label: "Carrots", level: 2, children: [] },
+        { role: "treeitem", label: "Broccoli", level: 2, children: [] },
+        { role: "treeitem", label: "Spinach", level: 2, children: [] },
+      ],
+    },
+  ],
+});
+
+</script>
