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<script>
o = []
window.onload = () => {
a = document.createElement("body");
b = document.createElementNS("http://www.w3.org/1998/Math/MathML", "math");
b.setAttributeNS(null, "display", "block");
c = document.createElementNS("http://www.w3.org/1998/Math/MathML", "munderover");
d = document.createTextNode("\n ");
c.appendChild(d);
c.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", "mo"));
b.appendChild(c);
a.appendChild(b);
document.documentElement.appendChild(a);
a.style.display = "inline";
setTimeout(() => {
d.data = "\u934F" + d.data;
}, 100)
}
</script>