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Test Info:

<script>
function eh1() {
a.remove()
window.event.composedPath()
}
function eh2() {
b.addEventListener("DOMNodeInserted", eh1)
c.insertAdjacentElement("afterBegin", document.createElement("s"))
}
</script>
<image srcset="A" onerror="eh2()"></image>
<marquee id="a">
<time id="b">
<dialog id="c">AA</dialog>